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List of commercial video games with available source code

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{{About||open source video games|List of open-source video games|commercial games which were released as freeware without source code|List of commercial video games released as freeware}}

{{Use dmy dates|date=January 2024|cs1-dates=l}}

This is a list of commercial video games with available source code. The source code of these commercially developed and distributed video games is available to the public or the games' communities.

In several of the cases listed here, the game's developers released the source code expressly to prevent their work from becoming lost. Such source code is often released under varying (free and non-free, commercial and non-commercial) software licenses to the games' communities or the public; artwork and data are often released under a different license than the source code, as the copyright situation is different or more complicated. The source code may be pushed by the developers to public repositories (e.g. SourceForge or GitHub), or given to selected game community members, or sold with the game, or become available by other means. The game may be written in an interpreted language such as BASIC or Python, and distributed as raw source code without being compiled; early software was often distributed in text form, as in the book BASIC Computer Games. In some cases when a game's source code is not available by other means, the game's community "reconstructs" source code from compiled binary files through time-demanding reverse engineering techniques.

Games with source code available on release

class="wikitable sortable" style="font-size:90%;"
   Title   

!First release

!Genre

!Engine license

!Content license

!Original developer

!Additional information

Akalabeth: World of Doom

|1979

|Role-playing video game

|Public domain software

|{{Proprietary|Freeware}}

|Richard Garriott

|Richard Garriott distributed the Applesoft BASIC written game originally as source code. Also later Origin Systems offered the source code on their FTP servers.[http://www.hardcoregaming101.net/ultima/ultima2.htm Akalabeth: World of Doom – Apple II (1979/80)] {{webarchive|url=https://web.archive.org/web/20160326055422/http://www.hardcoregaming101.net/ultima/ultima2.htm |date=2016-03-26 }} on hardcoregaming101.net "Origin Systems for a time had the original Apple II source code of Akalabeth for download on their website's FTP server"[https://web.archive.org/web/*/http://uo.com/archive/ftp/graphics/aklabeth.zip aklabeth.zip] {{webarchive|url=https://web.archive.org/web/20160721130303/https://web.archive.org/web/%2A/http%3A/uo.com/archive/ftp/graphics/aklabeth.zip |date=2016-07-21 }} on uo.com (archived)

Barkley 2

|2021 (cancelled)

|ARPG

|{{Proprietary|Proprietary/CC BY-NC 4.0
{{small|(engine/game code)}}}}

|{{Proprietary|CC BY-NC 4.0}}

|Tales of Game's Studios

|Source code released to the public under no license on 11 June 2021, upon the cancellation of the game.{{cite web |author1=paperjack |title=The future of Barkley 2 |url=https://talesofgames.itch.io/barkley-2/devlog/262720/the-future-of-barkley-2 |website=itch.io |publisher=Tales of Game's Studios |access-date=12 June 2021 |archive-url=https://archive.today/20210612210536/https://talesofgames.itch.io/barkley-2/devlog/262720/the-future-of-barkley-2 |archive-date=12 June 2021 |date=11 June 2021 |quote=As more time passed without me or anyone touching the project, I realized that B2 had no future as it is right now. We finally arrive at today, where after a long discussion, I finally decided to release all the files as open source. |url-status=live}}

Barotrauma

|2017

|Role-playing video game

|restrictive (only mods){{Cite web|url=https://github.com/Regalis11/Barotrauma|title=Regalis11/Barotrauma|website=GitHub|date=31 January 2022}}

|{{Proprietary}}

|Undertow Games / Joonas "Regalis" Rikkonen

|The game was released in 2017 commercially on Steam by independent developer Undertow Games (Joonas "Regalis" Rikkonen). Source code was released on 4 June 2017 on GitHub under a restrictive mods allowing license.[https://github.com/Regalis11/barotrauma barotrauma] on github.com[http://undertowgames.com/blog/662/ Barotrauma Source Code] on undertowgames.com His previous game, SCP – Containment Breach, is also available as free and open-source software under CC BY-SA license.

Beneath a Steel Sky Remastered

|2009

|Adventure game

|GPLv2+

|{{Proprietary}}

|Revolution Software

|Source code released under the GPL.{{cite web |title=Beneath a Steel Sky - Remastered |url=http://revolution.co.uk/?page_id=5&game_id=8&platform_id=0 |publisher=Revolution Software |access-date=17 April 2020 |archive-url=https://web.archive.org/web/20110927222706/http://revolution.co.uk/?page_id=5&game_id=8&platform_id=0 |archive-date=27 September 2011 }}

Bomb Alley

|1983

|Turn-based strategy

|{{Proprietary}}

|{{Proprietary}}

|Strategic Simulations / Gary Grigsby

|The game used the same engine used by Grigsby's previous Guadalcanal Campaign, which was coded and distributed as uncompiled Applesoft BASIC.[https://archive.org/details/a2_Bomb_Alley_19xx_SSI_RDOS BombAlley source code] on archive.org

Diamond Trust of London

|2012

|TBS

|Public domain software

|Public domain

|Jason Rohrer

|Following a Kickstarter crowdfunding campaign Diamond Trust of London was developed by Jason Rohrer and published by indiePub. On August 28, 2012, it was released for the Nintendo DS. The game has been placed in the public domain, hosted on SourceForge, like most of Rohrer's games.{{cite web|url=http://sourceforge.net/p/hcsoftware/DiamondTrust/ci/default/tree/ |title=DiamondTrust/ci/default/tree |author=Jason Rohrer |website=SourceForge |date=2011-10-17 |access-date=2013-05-22 |url-status=live |archive-url=https://web.archive.org/web/20140623021801/http://sourceforge.net/p/hcsoftware/DiamondTrust/ci/default/tree/ |archive-date=2014-06-23 }}

DONKEY.BAS

|1981

|Racing game

|{{Proprietary}}

|{{Proprietary}}

|Bill Gates, Neil Konzen

|Was written by Microsoft co-founder Bill Gates and Neil Konzen in 1981 and was included with early versions of the PC DOS operating system for the original IBM PC. Similar early BASIC games which were distributed as source code are GORILLA.BAS and NIBBLES.BAS.

Doom Classic

|2009

|First-person shooter

|GPLv2+

|{{Proprietary}}

|id Software

|Source code of the iOS port released in November 2009 as it is based on the PrBoom source port.{{cite web |title=DOOM Classic for iPhone Source Code Available |url=http://iphone.keyvisuals.com/apps/doom-classic-for-iphone-source-code-available/ |website=Keyvisuals |access-date=5 April 2020 |archive-url=https://web.archive.org/web/20091117102433/http://iphone.keyvisuals.com/apps/doom-classic-for-iphone-source-code-available/ |archive-date=17 November 2009 |date=13 November 2009 }}{{cite web |title=iOS updates & source code for Wolfenstein 3D Classic Platinum & DOOM Classic |url=http://www.bethblog.com/2011/09/08/ios-updates-source-code-for-wolfenstein-3d-classic-platinum-doom-classic/ |website=Bethesda Blog |publisher=ZeniMax Media |access-date=5 April 2020 |archive-url=https://web.archive.org/web/20150202131224/http://www.bethblog.com/2011/09/08/ios-updates-source-code-for-wolfenstein-3d-classic-platinum-doom-classic/ |archive-date=2 February 2015 |date=8 September 2011 }}{{cite web |last1=Langshaw |first1=Mark |title='Doom Classic', 'Wolfenstein 3D' iOS source codes released |url=https://www.digitalspy.com/videogames/a339787/doom-classic-wolfenstein-3d-ios-source-codes-released/ |website=Digital Spy |publisher=Hearst Communications UK |access-date=5 April 2020 |archive-url=https://web.archive.org/web/20120119070800/http://www.digitalspy.com/gaming/news/a339787/doom-classic-wolfenstein-3d-ios-source-codes-released.html |archive-date=19 January 2012 |date=11 September 2011 |url-status=live}}{{cite web |last1=Conditt |first1=Jessica |title=id releases source codes for Wolfenstein 3D Platinum and Doom Classic |url=https://www.engadget.com/2011-09-10-id-releases-source-codes-for-wolfenstein-3d-platinum-and-doom-cl.html |website=Joystiq (Engadget) |publisher=AOL |access-date=5 April 2020 |archive-url=https://web.archive.org/web/20111121055437/http://www.joystiq.com/2011/09/10/id-releases-source-codes-for-wolfenstein-3d-platinum-and-doom-cl/ |archive-date=21 November 2011 |date=10 September 2011 |url-status=live}}

ELIZA (DOCTOR)

|1966

|Chatbot / Rogerian psychotherapist simulator

|Public domain software / CC0

|Public domain

|Joseph Weizenbaum

|ELIZA is an influential video game predecessor written at the MIT Artificial Intelligence Laboratory by Joseph Weizenbaum between 1964 and 1966.{{cite web|title=Alan Turing at 100 |url=http://news.harvard.edu/gazette/story/2012/09/alan-turing-at-100/ |website=Harvard Gazette |date=13 September 2012 |access-date=2016-02-22 |url-status=live |archive-url=https://web.archive.org/web/20160303061956/http://news.harvard.edu/gazette/story/2012/09/alan-turing-at-100/ |archive-date=2016-03-03 }} Weizenbaum's original MAD-SLIP implementation was re-written in Lisp by Bernie Cosell.{{Cite web|url=https://www.codersatwork.com/bernie-cosell.html|archive-url=https://web.archive.org/web/20160208215640/http://codersatwork.com/bernie-cosell.html|title=Coders at Work: Bernie Cosell|archive-date=February 8, 2016|website=www.codersatwork.com}}{{Cite web|url=https://sites.google.com/view/elizagen-org/|archive-url=https://web.archive.org/web/20160304061624/http://elizagen.org/index.html|title=ELIZAGEN|archive-date=March 4, 2016|website=sites.google.com}} A BASIC version appeared in Creative Computing in 1977, written in 1973 by Jeff Shrager.[https://www.atariarchives.org/bigcomputergames/showpage.php?page=20 Big Computer Games: Eliza – Your own psychotherapist] on atariarchives.org This version, which was ported to many of the earliest personal computers, appears to have been subsequently translated into many other versions in many other languages.[https://elizagen.org/index.html The Genealogy of Eliza] {{webarchive|url=https://web.archive.org/web/20160304061624/http://elizagen.org/index.html |date=2016-03-04 }} by Jeff Shrager On May 28, 2021, the original MAD-Slip source code for ELIZA was discovered and released under the CC0 free-software license with permission of Weizenbaum's estate.{{cite web |last1=Shrager |first1=Jeff |title=Joseph Weizenbaum's Original ELIZA |url=https://sites.google.com/view/elizagen-org/the-original-eliza |website=elizagen.org |access-date=31 May 2021 |archive-url=https://web.archive.org/web/20210529000319/https://sites.google.com/view/elizagen-org/the-original-eliza |archive-date=29 May 2021 |date=28 May 2021 |quote=I contacted Dr. Weizenbaum's estate for permission to open-source this code, and they granted this permission under a Creative Commons CC0 public domain license. |url-status=live}}{{Cite tweet |last=Berry |first=David M. |user=berrydm |number=1398424198054395909 |date=28 May 2021 |title=Joseph Weizenbaum's Original ELIZA source code rediscovered. Missing for over 50 years, this really is an incredible find. |access-date=31 May 2021 |url-status=live |archive-url=https://web.archive.org/web/20210531180255/https://twitter.com/berrydm/status/1398424198054395909 |archive-date=31 May 2021}}{{Cite tweet |last=Weizenbaum |first=Natalie |user=nex3 |number=1398742311903715328 |date=29 May 2021 |title=Jeff Shrager of Stanford has unearthed the original source code for ELIZA and worked with my grandfather's estate (which is to say, my mom) to release it publicly! |access-date=31 May 2021 |url-status=live |archive-url=https://web.archive.org/web/20210531181838/https://twitter.com/nex3/status/1398742311903715328 |archive-date=31 May 2021}}

Frogatto & Friends

|2010

|Platform

|Zlib license / CC BY 3.0

|{{Proprietary}}

|Lost Pixel

|The game was developed open-source on GitHub with an own open-source game engine{{cite web|url=https://github.com/anura-engine/anura/blob/trunk/LICENSE |date=2015-04-26 |access-date=2015-10-10 |title=LICENCE |website=anura-engine - GitHub |author=Kristina Simpson |url-status=live |archive-url=https://web.archive.org/web/20160721130257/https://github.com/anura-engine/anura/blob/trunk/LICENSE |archive-date=2016-07-21 }} by several The Battle for Wesnoth developers and released in July 2010 for several platforms. The game was for purchase on the MacOS' app store,[http://freegamer.blogspot.de/2011/04/humble-indie-bundles-source-releases.html Humble Indie Bundle's Source Releases] {{webarchive|url=https://web.archive.org/web/20160809181454/http://freegamer.blogspot.de/2011/04/humble-indie-bundles-source-releases.html |date=2016-08-09 }} by Iwan Gabovitch "Another game which is commercial (on iDevices) and has FOSS code and closed art [...] is Frogatto." (April 22, 2011)[https://itunes.apple.com/en/app/frogatto/id433338919?mt=12 Frogatto by Lost Pixel] {{webarchive|url=https://web.archive.org/web/20160911025729/https://itunes.apple.com/en/app/frogatto/id433338919?mt=12 |date=2016-09-11 }} on itunes.apple.com iPhone App Store{{cite web|url=https://itunes.apple.com/app/frogatto/id382015046?mt=8 |title=Frogatto & Friends for iPhone, iPod touch, and iPad on the iTunes App Store |website=iTunes |access-date=2012-03-03 |url-status=dead |archive-url=https://web.archive.org/web/20121109101624/https://itunes.apple.com/app/frogatto/id382015046?mt=8 |archive-date=2012-11-09 }} and BlackBerry App World{{cite web|title=BlackBerry App World: Frogatto |url=http://appworld.blackberry.com/webstore/content/95522 |access-date=16 March 2012 |url-status=live |archive-url=https://web.archive.org/web/20120317175718/http://appworld.blackberry.com/webstore/content/95522/ |archive-date=17 March 2012 }} as the game assets were kept proprietary.[https://github.com/frogatto/frogatto/blob/master/LICENSE License] {{webarchive|url=https://web.archive.org/web/20150503175100/https://github.com/frogatto/frogatto/blob/master/LICENSE |date=2015-05-03 }} "CC BY 3.0 LICENSE [...] assets under copyright" on github.com/frogatto

HyperRogue

|2011

|Roguelike

|GPLv2+

|{{Proprietary}}

|Zeno Rogue

|Released in 2011 on GitHub[https://github.com/zenorogue/hyperrogue hyperrogue] on github.com as open-source non-Euclidean roguelike, it was commercialized in 2015 on Steam and other distributors.{{cite web |url=https://www.rockpapershotgun.com/2017/09/28/hyperrogue-non-euclidean-roguelike/ |title=HyperRogue, the non-Euclidean roguelike, is a mind-melting masterpiece |last=Smith |first=Adam |date=28 September 2017 |journal=Rock Paper Shotgun |access-date=29 September 2017 |quote=}}

Ion Fury

|2019

|First-person shooter

|GNU General Public License

|{{Proprietary}}

|Voidpoint

|Ion Fury is based on the EDuke32 source port of Duke Nukem 3D, which is under the GNU General Public License. It is possible to compile Ion Fury by downloading the latest version of EDuke32 and compile it with the flag FURY set to 1.{{cite web |url = https://svn.eduke32.com/filedetails.php?repname=eduke32&path=%2FGNUmakefile |title = View of the latest Makefile of EDuke32 |access-date = October 22, 2019 |date = October 19, 2019 |archive-date = August 3, 2020 |archive-url = https://web.archive.org/web/20200803183303/https://svn.eduke32.com/filedetails.php?repname=eduke32&path=%2FGNUmakefile }}

Jagged Alliance 2 Wildfire (now JA2-Stracciatella[https://ja2-stracciatella.github.io/ ja2-stracciatella] {{webarchive|url=https://web.archive.org/web/20170420144003/https://ja2-stracciatella.github.io/ |date=2017-04-20 }} on github.io)

|2004

|Tactical role-playing game

|Own license

|{{Proprietary}}

|iDeal Games

|Source code was bundled and released with JA2: Wildfire 2004.{{cite web|url=http://ve3d.ign.com/articles/news/18050/Jagged-Alliance-2-Source-Code-To-Be-Bundled-With-Wildfire |title=Jagged Alliance 2 Source Code To Be Bundled With Wildfire |first=Andrew |last=Burnes |work=ign.com |access-date=2012-12-23 |date=2004-02-25 |archive-url=https://web.archive.org/web/20130108130325/http://ve3d.ign.com/articles/news/18050/Jagged-Alliance-2-Source-Code-To-Be-Bundled-With-Wildfire |archive-date=2013-01-08 }} The JA: Unfinished Business source code became later available too.[http://kermi.pp.fi/JA_UB/Source/ JA_UB] {{webarchive|url=https://web.archive.org/web/20160721130819/http://kermi.pp.fi/JA_UB/Source/ |date=2016-07-21 }} on kermi.pp.fi

Limit Theory

|2018 (canceled)/2022

|Real-time strategy

|Unlicense

|Unlicense

|Procedural Reality

|Source code released to the public due to the cancelation of the title.{{cite web |last1=Carter |first1=Justin |title=Canceled Kickstarter game Limit Theory opens its source code |url=https://www.gamedeveloper.com/production/canceled-kickstarter-game-i-limit-theory-i-opens-its-source-code |website=Game Developer |publisher=Informa |access-date=29 July 2022 |archive-url=https://web.archive.org/web/20220729035111/https://www.gamedeveloper.com/production/canceled-kickstarter-game-i-limit-theory-i-opens-its-source-code |archive-date=29 July 2022 |date=28 July 2022 |url-status=live}}{{cite web |last1=Lane |first1=Rick |title=Limit Theory dev releases source code of the cancelled space sim, officially ends project |url=https://www.pcgamer.com/limit-theory-dev-releases-source-code-of-the-cancelled-space-sim-officially-ends-project/ |website=PC Gamer |publisher=Future plc |archive-url=https://web.archive.org/web/20220729035402/https://www.pcgamer.com/limit-theory-dev-releases-source-code-of-the-cancelled-space-sim-officially-ends-project/ |archive-date=29 July 2022 |date=28 July 2022 |url-status=live}}

One Hour One Life

|2018

|Multiplayer survival game

|Public domain software

|Public domain

|Jason Rohrer

|Released February 2018 and exclusively sold via the developer's webpage.[https://www.rockpapershotgun.com/2018/02/27/oh-the-humanity-jason-rohrer-releases-one-hour-one-life/ oh-the-humanity-jason-rohrer-releases-one-hour-one-life] on Rock, Paper, Shotgun Like the games before, public domain software and hosted on GitHub.[https://github.com/jasonrohrer/OneLife OneLife] on github.com/jasonrohrer

Pitman

|1985

|Puzzle game

|{{Proprietary}}

|{{Proprietary}}

|Yutaka Isokawa

|Originally created in 1985 on a MZ-700 home computer by Yutaka Isokawa. The BASIC listing was published in the August 1985 issue of the magazine "Oh!MZ Publications".[http://gamepreservation.derboo.de Isokawa's Original HuBasic Source Code] {{webarchive|url=https://web.archive.org/web/20160721130051/http://gamepreservation.derboo.de/ |date=2016-07-21 }} scanned from Oh!MZ August 1985Hardcore Gaming 101, [http://blog.hardcoregaming101.net/2011/08/who-framed-created-pitman.html Who created PITMAN?] {{webarchive|url=https://web.archive.org/web/20110911184343/http://blog.hardcoregaming101.net/2011/08/who-framed-created-pitman.html |date=2011-09-11 }} on hardcoregaming101.net (2011)[https://www.eurogamer.net/articles/2014-09-12-the-untold-history-of-japanese-game-developers-dvd-review The Untold History of Japanese Game Developers DVD review] {{webarchive|url=https://web.archive.org/web/20141006082810/http://www.eurogamer.net/articles/2014-09-12-the-untold-history-of-japanese-game-developers-dvd-review |date=2014-10-06 }} by Tom Massey on Eurogamer "Pitman creator Yukata Isokawa's emphatic emotional response to receiving a long-lost magazine featuring his original source code is particularly memorable." (2014-09-12) In 1990 the game was commercially converted for the Game Boy. In 2011, the game community restored a faithful as possible version from the available variants.[ The (almost) original version of Pitman (Catrap) preserved] {{Cite web |url=http://blog.hardcoregaming101.net/2012/07/the-almost-original-version-of-pitman.html |title=The (almost) original version of Pitman (Catrap) preserved|date=July 19, 2022 |access-date=26 June 2016 |archive-date=21 July 2016 |archive-url=https://web.archive.org/web/20160721130508/http://blog.hardcoregaming101.net/2012/07/the-almost-original-version-of-pitman.html |url-status=live }}

Pixel Dungeon

|2014

|roguelike

|GPLv3+

|{{Proprietary|Freeware/Commercial}}

|watabou

|Available commercially on Steam, while the Android release source code and original itch.io release are available for free.{{Cite web |url=https://www.rockpapershotgun.com/2015/06/01/pixel-dungeon-pc-review/ |title=Wot I Think: Pixel Dungeon |last1=Walker |first1=John |date=2015-06-01 |journal=Rock Paper Shotgun |access-date=2020-03-04 |url-status=live |archive-date=2015-06-02 |archive-url=https://web.archive.org/web/20150602004800/http://www.rockpapershotgun.com/2015/06/01/pixel-dungeon-pc-review/}}

Receiver

|2012

|FPS / stealth game

|own non-commercial conditions

|{{Proprietary}}

|Wolfire games

|The source code of the game is available since 2012 on GitHub under non-commercial conditions.[https://github.com/David20321/7DFPS 7dfps] {{webarchive|url=https://web.archive.org/web/20170523060641/https://github.com/David20321/7dfps |date=2017-05-23 }} on github.com

Santa Paravia en Fiumaccio

|1978

|turn-based strategy

|Public domain software

|Public domain

|George Blank

|The game by George Blank{{cite book |title=Genesis II, Creation and Recreation with Computers |last=Peterson |first=Dale |year=1983 |publisher=Reston Pub. Co. |isbn=978-0-8359-2434-4 |page=182 |url=https://books.google.com/books?id=DL1YAAAAMAAJ&q=%22Santa+Paravia%22 |access-date=2008-09-13}} first appeared in the December 1978 issue of SoftSide magazine as BASIC listing.{{Cite journal|url=https://archive.org/stream/softside-magazine-03/SoftSide_03_Vol_1-03_1978-12_Santa_Parvia#page/n7/mode/2up |title=Santa Paravia en Fiumaccio |last=Blank |first=George |date=December 1978 |journal=SoftSide |access-date=November 15, 2014 |url-status=live |archive-url=https://web.archive.org/web/20160316220325/https://archive.org/stream/softside-magazine-03/SoftSide_03_Vol_1-03_1978-12_Santa_Parvia |archive-date=March 16, 2016 }} It was published for sale on tape cassette as a computer game by Instant Software for the Radio Shack TRS-80, the Apple II, TI-99/4A, and PET.{{cite book |title=The Software Encyclopedia |year=1985 |publisher=Bowker |page=343 |url=https://books.google.com/books?id=5-w6AAAAMAAJ&q=%22Santa+Paravia%22 |access-date=2008-09-13}} It has been translated into many programming languages, such as ANSI C,{{cite web|url = http://planet-source-code.com/vb/scripts/ShowCode.asp?txtCodeId=7183&lngWId=3 |archive-url=https://web.archive.org/web/20141129011448/http://planet-source-code.com/vb/scripts/ShowCode.asp?txtCodeId=7183&lngWId=3|title = paravia.c|date = November 29, 2003 |access-date = November 15, 2014 |archive-date=November 29, 2014|website = PlanetSourceCode |publisher = |last = Knox |first = Thomas}} and has been ported to the Palm Pilot.

Softporn Adventure

|1981

|Text adventure

|{{Proprietary}}

|{{Proprietary|Freeware}}

|Chuck Benton / On-Line Systems

|A comedic, adult-oriented text adventure game produced for the Apple II in 1981. Softporn Adventure was originally written and released for the Apple II as Applesoft BASIC source code in 1981 by programmer Chuck Benton.[https://www.ifarchive.org/if-archive/games/appleII/softporn.zip softporn.zip] AppleBASIC source code packed as AppleII disk image, on ifarchive.org The game was released by On-Line Systems and became later the base for Leisure Suit Larry 1.{{cite web|url=http://www.allowe.com/More/download.htm |title=Al Lowe Downloads game history |access-date=2007-03-21 |year=2007 |url-status=live |archive-url=https://web.archive.org/web/20070324231836/http://www.allowe.com/More/download.htm |archive-date=2007-03-24 }} The PC version was also released later as freeware by Al Lowe.{{cite web|url=http://www.allowe.com/downloads/games.html |title=Softporn |quote=Before there was a Leisure Suit Larry, Chuck Benton created the only non-graphic game Sierra ever sold, Softporn for the Apple ][. I later used its puzzles as the basis for LSL1: Leisure Suit Larry in the Land of the Lounge Lizards. Still later, Gary Thompson reprogrammed it for the IBM PC. Here's your chance to see whether the changes I made to this classic game were improvements or not! Click here to download "Softporn" and see 1981 for yourself! |publisher=allowe.com |author=Al Lowe |access-date=2015-08-14 |url-status=live |archive-url=https://web.archive.org/web/20150811052340/http://www.allowe.com/downloads/games.html |archive-date=2015-08-11 }}[http://www.ifarchive.org/if-archive/games/source/softporp.zip softporp.zip (PC version)] on ifarchive.org[https://github.com/videogamepreservation/softporn softporn] on github.com

Strife: Veteran Edition (Strife remaster)

|2014

|FPS

|GPLv2+

|{{Proprietary}}

|Samuel Villarreal / Night Dive Studios

|In December 2014, Night Dive Studios coordinated the re-release of the 1996 first-person shooter role playing hybrid game Strife as Strife: Veteran Edition, after acquiring rights to the game. Because the game's source code had been lost, a derivative of the Chocolate Doom subproject Chocolate Strife was used as the game's engine, with its original programmers being contracted to do additional coding for the re-release. The source code of Strife: Veteran Edition has been made available under GPLv3 on GitHub by Samuel Villarreal and Night Dive Studios on December 12, 2014.{{cite web|url=https://github.com/svkaiser/strife-ve |title=Strife Veteran Edition GPL Source Release |last=Villarreal |first=Samuel |date=December 12, 2014 |website=GitHub |access-date=July 1, 2016 |url-status=live |archive-url=https://web.archive.org/web/20160721130618/https://github.com/svkaiser/strife-ve |archive-date=July 21, 2016 }} While this was the first source code opened for a Night Dive Studios Studio's game, it was announced more will follow,[https://www.reddit.com/r/IAmA/comments/4pbc01/iama_founder_of_night_dive_studios_stephen_kick/d4jl1n7 IamA Founder of Night Dive Studios, Stephen Kick - We track down and restore classic video games! AMA!] {{webarchive|url=https://web.archive.org/web/20160721130419/https://www.reddit.com/r/IAmA/comments/4pbc01/iama_founder_of_night_dive_studios_stephen_kick/d4jl1n7 |date=2016-07-21 }} by Stephen Kick on reddit.com "Lost source code is one of the things that genuinely depress me and we're currently evaluating the idea of releasing the code we've discovered and restored to anyone who wants to store it or modify it.[...] We have released the source to Strife: Veteran Edition and we are planning on releasing more code in the future." (22 June 2016) for instance for System Shock 1.[https://www.systemshock.org/index.php?topic=8402 System Shock Remake Feedback Request - Night Dive Studios] on systemshock.org "We've also tracked down the source code to the original game and will be releasing it to the community once it's ready." (10 February 2016)

Quadrilateral Cowboy

|2016

|Puzzle video game

|GPLv3+

|{{Proprietary}}

|Blendo Games

|Game source released on August 8, 2016, as it is based on the iodoom3 source port.{{cite web|url=http://www.pcgamer.com/quadrilateral-cowboys-source-code-has-been-released-to-the-public/ |title=Quadrilateral Cowboy's source code has been released to the public |first=Andy |last=Chalk |date=August 8, 2016 |access-date=August 8, 2016 |work=PC Gamer |url-status=live |archive-url=https://web.archive.org/web/20160811022026/http://www.pcgamer.com/quadrilateral-cowboys-source-code-has-been-released-to-the-public/ |archive-date=August 11, 2016 }}[http://blendogames.com/qc/faq.htm#sourcecode QC source code] {{webarchive|url=https://web.archive.org/web/20160827180133/http://blendogames.com/qc/faq.htm |date=2016-08-27 }} on blendogames.com

Telengard

|1982

|Dungeon crawler, role-playing, roguelike

|{{Proprietary}}

|{{Proprietary}}

|Avalon Hill / Daniel Lawrence

|As the game's BASIC source code ("DSKTEL.BAS") was available early on, ports and remaster exist therefore by the community.[http://atarihq.com/danb/files/TelengardListing.pdf TelengardListing.pdf] {{webarchive|url=https://web.archive.org/web/20160619050337/http://atarihq.com/danb/files/TelengardListing.pdf |date=2016-06-19 }} on atarihq.com[http://csdb.dk/release/?id=145661 Telengard Remaster 1.1] {{webarchive|url=https://web.archive.org/web/20160507220603/http://csdb.dk/release/?id=145661 |date=2016-05-07 }} on the C-64 scene database (2016)

The Castle Doctrine

|2014

|MMO

|Public domain software

|Public domain

|Jason Rohrer

|The Castle Doctrine is developed by Jason Rohrer in a public SourceForge repository and is like most of his creative works in the public domain.[http://sourceforge.net/p/hcsoftware/CastleDoctrine/ci/default/tree/ CastleDoctrine] {{webarchive|url=https://web.archive.org/web/20140221213434/http://sourceforge.net/p/hcsoftware/CastleDoctrine/ci/default/tree/ |date=2014-02-21 }} on sourceforge.net The Castle Doctrine was developed as an early access game and is now sold on Steam.

The Oregon Trail

|1975

|Role-playing video game

|Public domain (?)

|Public domain (?)

|Don Rawitsch / MECC

|First publicly released in 1975 in BASIC, as was the updated 1978 version which was more widely published in Creative Computing, May/June 1978.{{cite news|url=https://archive.org/stream/creativecomputing-1978-05/Creative_Computing_v04_n03_1978_May-June#page/n139/mode/2up |title=Oregon Trail |work=Creative Computing |date=May–June 1978 |access-date=22 January 2015 |last=Rawitsch |first=Dan |pages=132–139 |url-status=live |archive-url=https://web.archive.org/web/20160410095811/https://archive.org/stream/creativecomputing-1978-05/Creative_Computing_v04_n03_1978_May-June |archive-date=10 April 2016 }} Source rediscovered in 2011.[http://www.filfre.net/tag/the-oregon-trail On the Trail of the Oregon Trail] {{webarchive|url=https://web.archive.org/web/20110706150725/http://www.filfre.net/tag/the-oregon-trail/ |date=2011-07-06 }} by Jimmy Maher on filfre.net (source code: [http://www.filfre.net/misc/oregon1975.bas oregon1975.bas] {{webarchive|url=https://web.archive.org/web/20160628110722/http://www.filfre.net/misc/oregon1975.bas |date=2016-06-28 }} and [http://www.filfre.net/misc/oregon1978.bas oregon1978.bas] {{webarchive|url=https://web.archive.org/web/20160721130936/http://www.filfre.net/misc/oregon1978.bas |date=2016-07-21 }}, March 27, 2011)

The Prisoner

|1980

|adventure game

|{{Proprietary}}

|{{Proprietary}}

|Edu-Ware / David Mullich

|Developed in BASIC for the Apple II the source code was available with the release. Source code is hosted on GitHub.[https://github.com/xErik/The-Prisoner-Game The Prisoner - Game] on github.com

Thirty Flights of Loving

|2012

|Adventure game

|GPLv2+

|{{Proprietary}}

|Blendo Games

|Game source released in August 2012 as it is based on the KMQuake II source port.[http://blendogames.com/thirtyflightsofloving/faq.htm#source TFoL source code] {{webarchive|url=https://web.archive.org/web/20120826031016/http://blendogames.com/thirtyflightsofloving/faq.htm |date=2012-08-26 }} on blendogames.com

Vulture for Nethack

|1987

|rogue-like

|NetHack General Public License

|Freeware / Commercial

|NetHack community / Jaakko Peltonen / Clive Crous

|Falcon's Eye was developed by Jaakko Peltonen as graphical version of NetHack. After 2001 development had ended, Clive Crous continued Falcon's Eye as Vulture's Eye.{{cite web|url=http://www.onlamp.com/pub/a/onlamp/2003/01/02/falconseye.html |title=Falcon's Eye: The Making-Over of Nethack |date=2003-01-02 |author=Howard Wen |work=ONLamp.com |publisher=O'Reilly Media |url-status=live |archive-url=https://web.archive.org/web/20081106044320/http://www.onlamp.com/pub/a/onlamp/2003/01/02/falconseye.html |archive-date=2008-11-06 }}[https://www.gamedeveloper.com/design/the-history-of-rogue-have-you-you-deadly-zs The History of Rogue: Have @ You, You Deadly Zs] by Matt Barton & Bill Loguidiceon on Gamasutra "Falcon's Eye lives as a fork called Vulture's Eye." While still being Free and open-source software the game is commercialized via the author's website and Desura. In October 2013 the game was put into the Steam Greenlight process[https://steamcommunity.com/sharedfiles/filedetails/?id=188943860 Vulture for NetHack] {{webarchive|url=https://web.archive.org/web/20170219091802/https://steamcommunity.com/sharedfiles/filedetails/?id=188943860 |date=2017-02-19 }} on steamcommunity.com and successfully released on Steam in January 2016.

Wargroove

|2019

|Turn-based tactics

|Apache-2.0

|{{Proprietary}}

|Chucklefish

|Halley, the custom engine made for Wargroove,{{Cite tweet|last=Monteiro|first=Rodrigo|user=amzeratul|number=951240899383701504|date=10 January 2018|title=Wargroove is a custom engine. Would have been more work to implement in Unity than in Halley. I know, because I'm quite good at Unity. :D|access-date=30 December 2020|url-status=live|archive-url=https://web.archive.org/web/20190911014710/https://twitter.com/amzeratul/status/951240899383701504|archive-date=11 September 2019}} has been available on GitHub to the public at least since 2018.{{cite web |url=https://github.com/amzeratul/halley |title=GitHub - amzeratul/Halley: A lightweight game engine written in modern C++ |website=github.com |access-date=12 January 2022 |archive-url=https://web.archive.org/web/20180627122741/https://github.com/amzeratul/halley |archive-date=27 June 2018 }}

Wolfenstein 3D Classic Platinum

|2009

|First-person shooter

|GPLv2+

|{{Proprietary}}

|id Software

|Source code of the iOS port released in March 2009 as it is based on the Wolfenstein 3-D Redux source port.{{cite web |last1=Cohen |first1=Peter |title=Wolfenstein 3D comes to iPhone; developer releases source |url=https://www.macworld.com/article/1139698/wolfenstein.html |website=Macworld |publisher=Mac Publishing |access-date=4 April 2020 |archive-url=https://web.archive.org/web/20130112125040/http://www.macworld.com/article/1139698/wolfenstein.html |archive-date=12 January 2013 |date=27 March 2009 |url-status=live}}{{cite web |last1=Burnes |first1=Andrew |title=John Carmack Releases Open Source Wolfenstein iPhone Port |url=http://ve3d.ign.com/articles/news/45679/John-Carmack-Releases-Open-Source-Wolfenstein-iPhone-Port |website=Voodoo Extreme 3D |publisher=IGN Entertainment |access-date=4 April 2020 |archive-url=https://web.archive.org/web/20090326012648/http://ve3d.ign.com/articles/news/45679/John-Carmack-Releases-Open-Source-Wolfenstein-iPhone-Port |archive-date=26 March 2009 |date=23 March 2009 }}{{cite web |last1=Ransom-Wiley |first1=James |title=Carmack releases open source Wolfenstein for iPhone |url=https://www.engadget.com/2009-03-24-carmack-releases-open-source-wolfenstein-for-iphone.html |website=Joystiq (Engadget) |publisher=AOL |access-date=4 April 2020 |archive-url=https://web.archive.org/web/20090326003544/http://www.joystiq.com/2009/03/24/carmack-releases-open-source-wolfenstein-for-iphone/ |archive-date=26 March 2009 |date=24 March 2009 |url-status=live}}

Wrath: Aeon of Ruin

|2019 (early access)

|First-person shooter

|GPLv2+

|{{Proprietary}}

|KillPixel

|Being released in November 2019 as early access game, based on the DarkPlaces engine, the game's source code was also released on GitHub.[https://www.gamingonlinux.com/articles/wrath-aeon-of-ruin-engine-source-code-released-a-quick-look.16218 Wrath: Aeon of Ruin engine source code released - a quick look] on gamingonlinux.com (15 March 2020)[https://github.com/KillPixelGames/wrath-darkplaces KillPixelGames/wrath-darkplaces] on github.com

Games with later released source code

{{List has been split|List of commercial video games with later released source code}}

Games with available source code

The table below with available source code resulted not from official releases by companies or IP holders but from unclear release situations, like lost and found games, and leaks of unclear legality (e.g. by an individual developer on end-of-product-life) or undeleted content.[https://tcrf.net/Category:Games_with_uncompiled_source_code Games_with_uncompiled_source_code] on tcrf.net

class="wikitable sortable" style="font-size:90%;"
   Title   

!Original release

!Source code found or leaked

!System

!Genre

!Original developer

!Additional information

360: Three Sixty

|1999

|2020

|PlayStation

|Racing

|Smart Dog

|The PlayStation source code can be found in a dummy file on the disc.{{Cite web|url=https://tcrf.net/360:_Three_Sixty|title=360: Three Sixty - The Cutting Room Floor|website=tcrf.net}}

Actua Soccer 96

|1996

|1996

|DOS

|Sports

|Gremlin Interactive

|A demo CD that shipped with a game magazine accidentally contained the C++ source code of the game.[https://news.ycombinator.com/item?id=13692825 Development content accidentally shipped on a DOS CD-ROM game from 1993] at ycombinator.com[https://www.betaarchive.com/forum/viewtopic.php?f=14&t=31243 Disc with beta stuff from Interplay (Windows)] on betaarchive.com (2014)

Adventure in Time

|1981

|2016

|Atari 8-bit/Apple II

|Adventure game

|Phoenix Software

|In November 2016 the source code for the Atari 8-bit and Apple II versions of Adventure in Time and Birth of the Phoenix were released by Kevin Savetz, along with partial code of The Queen of Phobos for Apple II.{{cite tweet|last1=Savetz |first1=Kevin |title=Apple // friends, I got you a present: the source code for Adventure In Time and Birth of the Phoenix |user=KevinSavetz|number=795425900237946880 |access-date=29 February 2020 |date=6 November 2016}}

Age of Pirates: Captain Blood

|2010

|2022

|Windows

|Action-adventure game/Hack and slash

|1C: Seawolf Studio

|Source code of game engine was released on GitHub under GPLv3 on November 28, 2022.[https://github.com/storm-devs/captain-blood Source code of the Captain Blood] on GitHub

Age of Pirates 2: City of Abandoned Ships

|2009

|2021

|Windows

|Role-playing game

|Akella

|Source code of Storm Engine released on GitHub under GPLv3 in a 2021 and support Sea Dogs: To Each His Own and Age of Pirates 2: City of Abandoned Ships.[https://github.com/storm-devs/storm-engine Storm Engine source code] on GitHub[https://store.steampowered.com/news/app/223330/view/3013444995188538670 Storm Engine source code announcement] on store.steampowered.com

Airforce Delta

|2000

|2020

|Game Boy Color

|Flight simulator

|Climax Studios

|Source code of the Game Boy Color version was leaked on 4chan in May 2020.{{Cite web|url=https://archive.org/details/airforcedeltaGBC_20200511|title=Air Force Delta - GBC full source code and betas|year=2000}}

Aliens versus Predator 2

|2001

|2002

|Windows

|FPS

|Monolith Productions

|Source code released on the Monolith Productions FTP server in 2002, then quickly taken down.[https://www.bluesnews.com/s/37960/avp2-source-code AvP2 Source Code] at Blue's News

Area 51

|2005

|2024

|PlayStation 2, Xbox

|FPS

|Midway Studios Austin

|Final source code for the game was leaked on GitHub by Andrew Sampson on March 7, 2024.{{Cite tweet |last=Sampson |first=Andrew |author-link= |user=andrewmd5 |number=1765675339144155267 |date=2024-03-07 |title=For game preservation purposes, here is the source code for Area 51 (2005) by Midway Studios Austin |access-date=2024-03-14 |url-status=live |archive-url=https://archive.today/20240314130442/https://twitter.com/andrewmd5/status/1765675339144155267 |archive-date=2024-03-14 |quote= |ref=}}

Asteroids

|1979

|1996

|Atari 7800

|Arcade

|Atari

|Source code of Asteroids in the Atari 7800 version was released in physical form by Atari Sunnyvale on their closure 1996. Together with Ms. Pac-Man, Dig Dug, Robotron: 2084 and eight further games reconstructed by the Atari-Museum and published later.{{cite web|url=https://www.tomsguide.com/us/Atari-7800-Source-Code,news-4187.html |title=Atari 7800 Source Code Rescued – Atari released the source code for the 7800 console and games |access-date=2012-01-09 |date=2009-07-07 |first=Kevin |last=Parrish |publisher=tomsguide.com |url-status=live |archive-url=https://web.archive.org/web/20140422035825/http://www.tomsguide.com/us/Atari-7800-Source-Code%2Cnews-4187.html |archive-date=2014-04-22 }}{{cite web|url=https://www.atarimuseum.com/videogames/consoles/7800/games/ |title=7800 Games & Development |quote=These games were rescued from Atari ST format diskettes that were thrown out behind 1196 Borregas when Atari closed up in 1996. The Atari Museum rescued these important treasures and recovered them from the diskettes. |publisher=atari-museum.com |access-date=2012-01-09 |year=2009 |archive-url=http://webarchive.loc.gov/all/20090706155155/http://www.atarimuseum.com/videogames/consoles/7800/games/ |archive-date=2009-07-06 }} Ports for modern FPGAs were made later.[https://github.com/GadgetFactory/Papilio-Arcade Papilio-Arcade] on github.com

Army Men

|1998

|2022

|Windows

|Real-time tactics

|The 3DO Company

|Source code for the Windows version was uploaded to archive.org in 2022.{{Cite web|url=https://archive.org/details/armymen_202209|title=Army Men 1998 Source and Tools|year=2022}}

Art of Fighting

|1992

|2014

|Neo Geo

|Fighting game

|SNK

|The source code was found on an NEC PC-9821 used for developing Neo Geo titles in 2014.{{Cite web|url=https://www.mameworld.info/ubbthreads/showflat.php?Number=320783|archive-url=https://web.archive.org/web/20150704054840/http://www.mameworld.info/ubbthreads/showflat.php?Number=320783|title=MAMEWorld Forums - News - Art of Fighting Source Code for Neogeo [044]|archive-date=July 4, 2015|website=www.mameworld.info}}{{Cite web|url=https://app.box.com/s/5on2e593tqt2c8ketc68|title=Box|website=app.box.com}}

Aztec

|1982

|2019

|Atari 8-bit

|Action-adventure

|Datamost

|In January 2019 Jason Scott uploaded the source code of this game to the Internet Archive.{{cite web |last1=Scott |first1=Jason |author-link1=Jason Scott |title=So, I've re-imaged (or imaged for the first time) a pile of Apple II floppies that came from an auction of floppies. They are from the old company DATAMOST, who did some amazing work over the early 1980s. |url=https://twitter.com/textfiles/status/1086339944631676928 |website=Twitter |access-date=27 December 2019 |archive-url=https://web.archive.org/web/20190403211018/https://twitter.com/textfiles/status/1086339944631676928 |archive-date=3 April 2019 |date=18 January 2019 |url-status=live}}

Battle Konchuuden

|1999

|2019

|PlayStation

|Role-playing game

|Jaleco Entertainment

|A zip file was found within the retail games dummy data, which included the full PlayStation source code to the game.{{Cite web|url=https://github.com/RetailGameSourceCode/BattleKonchuuden|title=RetailGameSourceCode/BattleKonchuuden|date=November 25, 2020|via=GitHub}}

Beatmania 5th Mix

|1999

|2000

|PlayStation

|Music video game

|Konami

|With the 2000 Japanese PSX game Beatmania Best Hits there was mistakenly included the source code for the 1999 game Beatmania 5th Mix.[http://www.psxdev.net/forum/viewtopic.php?f=41&t=469 Leaked commercial game source code (sort of)] {{webarchive|url=https://web.archive.org/web/20170314062619/http://www.psxdev.net/forum/viewtopic.php?f=41&t=469 |date=2017-03-14 }} by Yagotzirck (November 12, 2013)

The Bilestoad

|1982

|2019

|Apple II

|Action-adventure

|Datamost

|In January 2019 Jason Scott uploaded the source code of this game to the Internet Archive.{{cite web |title=This source code release is meant to highlight how fragile things really are. It's The Bilestoad, the 1982 brilliant creation by Mark Goodman under the name Mangrove Earthshoe, for the Apple II, for DataMost. |url=https://twitter.com/textfiles/status/1119715147528966144 |website=Twitter |access-date=27 December 2019 |date=20 April 2019}}

The Black Cauldron

|1985

|2022

|DOS

|Adventure

|Sierra Entertainment

|During October 25–27, 2022, Jason Scott uploaded to GitHub 13 repositories containing source code for a variety of video games.

Blood

|1997

|2000–2010, 2023

|DOS

|FPS

|QStudios / Monolith Productions

|In 2000, partial source code of an alpha version was leaked. In 2010, the complete alpha source code was leaked.[https://www.blood-wiki.org/index.php/Blood_Alpha Blood Alpha] on blood-wiki.org Using the code as reference, a reverse engineered build of the final version was created by Alexander Makarov for source ports around 2017.{{Cite web|url=https://www.moddb.com/games/blood/news/bloodgdx-a-blood-sourceport-released|title=BuildGDX - a Blood Sourceport Released news|website=Mod DB|date=18 June 1997 }} A later alpha draft from July 1996 was leaked in January 2023 by "x0r_jmp".{{cite web|first=Ted |last=Litchfield |date=2023-01-05 |title=The Duke Nukem Forever leaker just dropped the source code for another beloved '90s FPS |url=https://www.pcgamer.com/the-duke-nukem-forever-leaker-just-dropped-the-source-code-for-another-beloved-90s-fps/ |website=PC Gamer|access-date=2023-02-05}}

Blood & Magic

|1996

|2021

|DOS

|Real-time strategy

|Tachyon Studios

|Source code was uploaded to archive.org in 2021.{{Cite web|url=https://archive.org/details/blood-and-magic-1996-tachyon-studios-source-code.-7z|title = Blood and Magic 1996 Tachyon Studios Source Code|date = December 1996}}

B.O.B. / Space Funky B.O.B.

|1993

|2008

|SNES

|Side-scrolling game

|Electronic Arts

|On September 12, 2008, the source code of the SNES version became available as it was found on an eBay-bought hard drive.{{cite web|url=http://wiki.superfamicom.org/snes/show/Space+Funky+B.O.B. |title=Space Funky B.O.B. - Space Funky B.O.B. Source Code |quote=This was originally posted on eludevisibility.org when I (Matthew Callis) originally bought these disks off eBay |first=Matthew |last=Callis |publisher=superfamicom.org |access-date=2013-01-14 |date=2008-09-12 |url-status=live |archive-url=https://web.archive.org/web/20130128161103/http://wiki.superfamicom.org/snes/show/Space%2BFunky%2BB.O.B. |archive-date=2013-01-28 }}

Buck Rogers: Planet of Zoom

|1983

|2018

|Atari 8-bit

|Rail shooter

|Sega

|On May 17, 2018, Kevin Savetz uploaded scans of the complete source code of the Atari 8-bit conversion of Buck Rogers: Planet of Zoom donated by Charlie Kulas.{{cite web |last1=Savetz |first1=Kevin |title=Here's the source code for Buck Rogers, from our new old friend Charlie Kulas. |url=https://atariage.com/forums/topic/234310-new-atari-8-bit-scans-and-video/?do=findComment&comment=4029642 |website=AtariAge |access-date=9 April 2020 |date=17 May 2018}}

California Watersports

|2001

|2020

|PlayStation

|Sports

|Theyer GFX

|The PlayStation source code was released in 2020 with the permission of developer Mark Theyer.{{Cite web|url=https://archive.org/details/cws-src|title=California Watersports (PS1) Source Code|date=March 15, 2001|via=Internet Archive}}

Captain Comic

|1988

|2012

|NES

|Platformer

|Michael Denio

|In September 2012 the source code of the NES version was offered on eBay.[http://www.gamesniped.com/2012/09/10/original-nes-captain-comic-source-code-floppy-disk/ Original nes captain comic source-code floppy disk] {{webarchive|url=https://web.archive.org/web/20161220065933/http://www.gamesniped.com/2012/09/10/original-nes-captain-comic-source-code-floppy-disk/ |date=2016-12-20 }} on gamesniped.com (September 2012)[http://www.ebay.com/itm/-/120983685822? Original Captain Comic Source Code Floppy Disk 3.5" Color Dreams NES 11/7/89] {{webarchive|url=https://web.archive.org/web/20160923034020/http://www.ebay.com/itm/-/120983685822 |date=2016-09-23 }} on ebay.com

Chicken Run

|2000

|2011, 2024

|Dreamcast, Game Boy Color

|Stealth game

|Blitz Games

|In May 2011, the Sega Dreamcast source code became available, found by a collector on a Dreamcast Dev Kit's harddrive. On 14 January 2024, [https://archive.org/details/chicken-run-gbc-source-code-sep-7-2000 the Game Boy Color source code] was released on archive.org.[https://assemblergames.com/l/threads/sega-dreamcast-chicken-run-source-code-bananabreak.32952/ Sega Dreamcast: Chicken Run Source Code] {{webarchive|url=https://web.archive.org/web/20160707013343/http://assemblergames.com/l/threads/sega-dreamcast-chicken-run-source-code-bananabreak.32952/ |date=2016-07-07 }} on assemblergames.com (2011)[http://bananabreak-rips.blogspot.de/2015/11/chicken-run-source-code-bananabreak.html Chicken Run (2000)(Source Code)] {{webarchive|url=https://web.archive.org/web/20160630074338/http://bananabreak-rips.blogspot.de/2015/11/chicken-run-source-code-bananabreak.html |date=2016-06-30 }} on bananabreak-rips.blogspot.de (2011/05/05)

Chill

|1998

|2020

|PlayStation

|sports game

|Silicon Dreams

|A zip file was found within the retail game's dummy data, which included the full PlayStation 1 source code to the game.

Columns

|1990

|2010

|Game Gear

|Puzzle game

|Sega

|Game Gear version source code was found in 2006 and released in 2010.{{Cite web|url=https://forums.sonicretro.org/index.php?threads/columns-game-gear-sources.22220/|title = Columns (Game Gear) Sources}}

Counter-Strike: Global Offensive

|2012

|2020

|Windows

|first-person shooter

|Valve

|A 2017 version of the game's source code was leaked on 4chan in 2020.{{cite web|last=Vic|date=12 Sep 2012|title=Source Engine 2007's Source Code Library Leaked|url=http://lambdageneration.com/news/other/source-engine-2007s-source-code-library-leaked/|website=LambdaGeneration}}

Cruis'n USA

|1994

|2021

|Arcade

|Racing game

|Midway Games

|Uploaded by Jason Scott to GitHub on April 6, 2021. {{Cite web|url=https://github.com/historicalsource?tab=repositories|title = Historicalsource - Repositories|website = GitHub}}

Crysis 2

|2011

|2022

|Windows, Xbox 360, PlayStation 3

|first-person shooter

|Crytek

|Source code was released on a web forum in August 2022, before being reuploaded to Internet Archive in 2023. [https://archive.org/details/crysis2_src_pc_ps3_x360.7z_202302 Crysis 2 source code]

Crysis 3

|2013

|2024

|Windows

|first-person shooter

|Crytek

|Passworded source code was released by a ransomware group in 2020, but went largely unnoticed until 2024 when the password was discovered and made available on archive.org.[https://archive.org/details/c3_src Crysis 3 source code]

Cybermorph

|1993

|2014

|Atari Jaguar

|Graphic adventure

|Attention to Detail

|Source released in 2014 on atariage.com.{{cite web | url=https://atariage.com/forums/topic/224770-the-atari-jaguar-source-code-thread/ | title=The Atari Jaguar source code thread | date=26 April 2014 }}

Cyberpunk 2077

|2020

|2021

|Windows

|Role-playing game

|CD Projekt Red

|Source code obtained in a 2021 ransomware attack against CD, and later leaked online.{{cite web | url=https://www.pcgamer.com/cd-projekt-confirms-stolen-source-code-is-being-circulated-online/ | title=CD Projekt confirms stolen source code is being circulated online | website=PC Gamer | date=11 June 2021 }}

Dark Chambers

|1988

|2008

|Atari 2600

|Dungeon crawl

|Atari Corporation

|The source code for the Atari 2600 version of Dark Chambers was uploaded to AtariAge by Curt Vendel on February 9, 2008.{{cite web |last1=Vendel |first1=Curt |title=Dark Chambers Source Code |url=https://atariage.com/forums/topic/121012-dark-chambers-source-code/ |website=AtariAge |access-date=18 September 2021 |archive-url=https://web.archive.org/web/20210524053524/https://atariage.com/forums/topic/121012-dark-chambers-source-code/ |archive-date=24 May 2021 |date=9 February 2008 |url-status=live}}

Dark Engine (Thief, Thief II, System Shock 2)

|1998

|2009–2010

|Windows

|Stealth game

|Looking Glass Studios

|In 2009, a complete copy of the Dark Engine source code was discovered in the possession of an ex-Looking Glass Studios employee who was at the time continuing his work for Eidos Interactive.{{cite web|url=http://www.rockpapershotgun.com/2010/12/14/shipping-receiving-dark-engine-source/ |title=Dark Engine Source Code Found In A Bag |first=Quintin |last=Smith |date=2010-12-14 |access-date=2011-04-15 |journal=Rock Paper Shotgun |quote=As of this weekend, Christmas has come early for the Through the Looking Glass community. A CD's been discovered containing the source code for the Dark Engine, aka the engine used by Thief, Thief II and System Shock 2 (not to mention Irrational and Looking Glass' cancelled cold war spy game Deep Cover). |url-status=live |archive-url=https://web.archive.org/web/20110426070336/http://www.rockpapershotgun.com/2010/12/14/shipping-receiving-dark-engine-source/ |archive-date=2011-04-26 }} In late April 2010, a user on the Dreamcast Talk forum disassembled the contents of a Dreamcast development kit he had purchased.{{cite web|url=http://www.geek.com/games/game-engine-used-for-thiefsystem-shock-2-found-with-dreamcast-dev-kit-1300148/ |title=Game engine used for Thief/System Shock 2 found with Dreamcast dev kitGames |first=Matthew |last=Humphries |date=2010-12-14 |quote=If you asked me which is my favorite all time video game, my number one would be Thief II. So it's with more than a little excitement that I report the source code for the Dark Engine, used to create Thief, Thief II, and System Shock 2, has been found. |website=Rock Paper Shotgun |access-date=2015-07-04 |url-status=live |archive-url=https://web.archive.org/web/20150705183647/http://www.geek.com/games/game-engine-used-for-thiefsystem-shock-2-found-with-dreamcast-dev-kit-1300148/ |archive-date=2015-07-05 }} Later, significant updates for the Dark Engine-based games were published.{{cite web|url=http://www.ttlg.com/forums/showthread.php?t=140085 |title=Thief 2 V1.19 & System Shock 2 V2.4 |author=Le Corbeau |quote=This is an unofficial patch for Thief II: The Metal Age (T2) which updates the game from v1.18 to v1.19, providing improved support for modern hardware and correcting many known bugs. |publisher=ttlg.com |access-date=2012-11-10 |date=2012-09-25 |url-status=live |archive-url=https://web.archive.org/web/20121110185312/http://www.ttlg.com/forums/showthread.php?t=140085 |archive-date=2012-11-10 }}{{cite web|url=http://www.rockpapershotgun.com/2012/02/07/thief-2-is-now-on-good-old-games/ |quote=[...]discovered that it suffers much of the same resolution and widescreen based trouble from the previous release, but this utility [Tafferpatch] fixed all my troubles [...] |title=Thief 2 Is Now On Good Old Games |journal=Rock Paper Shotgun |first=Craig |last=Pearson |date=2012-02-07 |access-date=2012-11-10 |url-status=live |archive-url=https://web.archive.org/web/20121111190221/http://www.rockpapershotgun.com/2012/02/07/thief-2-is-now-on-good-old-games/ |archive-date=2012-11-11 }}{{cite web|url=http://www.ttlg.com/forums/showthread.php?t=131106 |title=Tafferpatcher: unofficial complete patch for Thief 2 |date=2012-11-10 |access-date=2012-11-10 |quote=Included patches: - Patch 1.19 which eliminates all issues with modern hardware, widescreen resolutions, multi-core systems, etc.- Various mission, gamesys, model and texture fixes.[...] |publisher=www.ttlg.com |url-status=live |archive-url=https://web.archive.org/web/20121109222037/http://www.ttlg.com/forums/showthread.php?t=131106 |archive-date=2012-11-09 }}

Dark Reign 2

|2000

|2011

|Windows

|RTS

|Pandemic Studios

|Released by a former developer of Pandemic Studios under LGPL.{{cite web|url=http://games.slashdot.org/story/12/08/07/1225237/dark-reign-2-goes-open-source |title=Dark Reign 2 Goes Open Source |author=timothy |date=2012-08-07 |access-date=2013-08-13 |publisher=slashdot.org |url-status=live |archive-url=https://web.archive.org/web/20130921055529/http://games.slashdot.org/story/12/08/07/1225237/dark-reign-2-goes-open-source |archive-date=2013-09-21 }}{{cite web|url=https://code.google.com/p/darkreign2/ |title=darkreign2 |publisher=google code |date=2011-09-01 |access-date=2013-08-19 |url-status=live |archive-url=https://web.archive.org/web/20130810073304/http://code.google.com/p/darkreign2/ |archive-date=2013-08-10 }} Legal status unclear.

Defender

|1981

|2021

|Arcade

|Scrolling shooter

|Williams Electronics

|On 7 January 2021, Jason Scott uploaded to GitHub the source code for the original arcade version of Defender.{{Cite web|url=https://github.com/historicalsource/defender|title=historicalsource/defender|date=8 March 2021|via=GitHub}}

Desert Falcon

|1987

|2008

|Atari 2600

|Scrolling shooter

|General Computer Corporation

|The source code for the Atari 2600 version of Desert Falcon was uploaded to AtariAge by Curt Vendel on 9 February 2008.{{cite web |last1=Vendel |first1=Curt |title=Desert Falcon Source Code |url=https://atariage.com/forums/topic/121013-desert-falcon-source-code/ |website=AtariAge |access-date=18 September 2021 |archive-url=https://web.archive.org/web/20210524204509/https://atariage.com/forums/topic/121013-desert-falcon-source-code/ |archive-date=24 May 2021 |date=9 February 2008 |url-status=live}}

Devil May Cry 2

|2003

|2020

|Various

|Hack and slash

|Capcom

|Source code was obtained in a 2020 ransomware attack against Capcom.

Donald Duck's Playground

|1986

|2022

|DOS

|Adventure

|Sierra Entertainment

|During October 25–27, 2022, Jason Scott uploaded to GitHub 13 repositories containing source code for a variety of video games.

Donkey Kong

|1981

|2008

|Atari 8-bit

|Platform

|Nintendo

|In August 2008 the 6502 assembly language source code of Donkey Kong was published at the AtariAge forum by Curt Vendel,[http://atariage.com/forums/topic/130904-donkey-kong-source-code/ Donkey Kong source code] {{webarchive|url=https://web.archive.org/web/20150928081526/http://atariage.com/forums/topic/130904-donkey-kong-source-code/ |date=2015-09-28 }} at AtariAge.com and was discussed there by the original developer, Landon Dyer.[http://atariage.com/forums/topic/130904-donkey-kong-source-code/#entry1578879 Donkey Kong source code] {{webarchive|url=https://web.archive.org/web/20150928081526/http://atariage.com/forums/topic/130904-donkey-kong-source-code/ |date=2015-09-28 }} "I think it's pretty cool that this is finally released. Have fun. (Curt should find Super Pac-Man and do that one, too...)"

Doom

|1993

|2023, 2024

|Macintosh, DOS, SNES

|First-person shooter

|id Software

|Doom's Macintosh and DOS source code appeared on eBay in two different lots, and once purchased later found its contents online: the first on September 19, 2023 and the second on March 19, 2024.{{Cite web|url=https://www.doomworld.com/forum/topic/139867-is-this-macpc-doom-source-code-on-ebay-legit/|title=Is this Mac/PC Doom source code on ebay legit?|date=8 September 2023|website=Doomworld}} Amiga floppy disks containing the SNES source code were released on archive.org on June 5th, 2024. [https://archive.org/details/jeffs-doom-snes-disk-images/ Jeff's Doom FX SNES Source Code - Amiga Backup Disk Images]

Double Dragon II: The Revenge

|1989

|2013

|DOS

|Beat em up

|Technōs Japan

|In 2013 the Internet Archive put the undeleted assembly sources (DRGNSRC.LZH) of the DOS version for download.[https://archive.org/details/DRAGONII DragonII] {{webarchive|url=https://web.archive.org/web/20160721130116/https://archive.org/details/DRAGONII |date=2016-07-21 }} on archive.org[http://assemblergames.com/l/threads/source-found-on-original-double-ii-dragon-dos-game.30187/ source-found-on-original-double-ii-dragon-dos-game] {{dead link|date=August 2018|bot=medic}}{{cbignore|bot=medic}} on assemblergames.com (November 2010)

Dragon Rage

|2001

|2001

|PlayStation 2

|Shooter

|The 3DO Company

|Source code hidden inside a dummy file in the PlayStation 2 version of Jonny Moseley Mad Trix.{{Cite web |date=2022-08-12 |title=Jonny Mosely Mad Trix (PlayStation 2) |url=https://tcrf.net/Jonny_Moseley_Mad_Trix_(PlayStation_2)#Dragon_Rage_Source_Code |access-date=2022-08-12 |website=The Cutting Room Floor |language=en-GB}}

Duke Nukem Forever (alpha version only)

|2001

|2022

|Windows

|First-person shooter

|3D Realms

|Source code to an alpha version of the game, dated October 26, 2001, was leaked on May 10, 2022{{Cite web |date=2022-05-09 |title=3D Realms' original Duke Nukem Forever from 2001 has leaked online |url=https://www.videogameschronicle.com/news/3d-realms-original-duke-nukem-forever-from-2001-has-reportedly-leaked-online/ |access-date=2022-06-01 |website=VGC |language=en-GB}}

Empire

|1977

|197?

|FORTRAN/PDP-10

|turn-based wargame

|Walter Bright

|At some point, someone broke through the security systems at Caltech, and took a copy of the source code for the FORTRAN/PDP-10 version of the game.[https://github.com/DigitalMars/Empire-for-PDP-10 Empire-for-PDP-10] on GitHub This code was continually modified, being passed around from person to person and ported to other system e.g. to VAX/VMS OS.{{cite web |url = https://groups.google.com/group/comp.sys.atari.st/tree/browse_frm/month/1987-11/904778d5991fb920?rnum=11&lnk=nl |title = Empire on comp.sys.atari.st |first = Walter |last = Bright |date = 1987-11-03}}

Eve Online

|2003

|2011

|Windows

|Space strategy MMO

|CCP Games

|On 20 May 2011, someone released the EVE Online source code on a GitHub repository.{{cite web|url=https://www.geek.com/games/eve-online-source-code-posted-online-dmca-takedown-quickly-follows-1382821/ |title=Eve Online source code posted online, DMCA takedown quickly follows |first=Matthew |last=Humphries |date=2011-05-25 |access-date=2015-11-07 |publisher=geek.com |quote=It looks as though someone has posted the source code for the space MMO Eve Online there. As you'd imagine, developer CCP isn't too happy about this and was quick to issue the takedown request. |url-status=live |archive-url=https://web.archive.org/web/20151118134516/http://www.geek.com/games/eve-online-source-code-posted-online-dmca-takedown-quickly-follows-1382821/ |archive-date=2015-11-18 }} After the source code was online four days, CCP issued a DMCA take-down request which was followed by GitHub.{{Cite web|url=https://github.com/GitHub/dmca/blob/master/2011-05-24-cpp-virtual-world-operations.markdown|archive-url=https://web.archive.org/web/20151108180512/https://github.com/github/dmca/blob/master/2011-05-24-cpp-virtual-world-operations.markdown|title=dmca/2011-05-24-cpp-virtual-world-operations.markdown|website=GitHub|archive-date=November 8, 2015}}

Extreme-G 3

|2001

|2015

|PlayStation 2

|Racing game

|Acclaim Cheltenham

|The source code came into hands of a community member by unknown means around 2015.[https://web.archive.org/web/20160709222030/http://assemblergames.com/l/threads/extreme-g-3-racing-compiling-journey.58061/ extreme-g-3-racing-compiling-journey] on assemblergames.com (2015, archived)

Eye of the Beholder II: The Legend of Darkmoon

|1991

|2021

|DOS

|Role-playing game

|Westwood Associates

|The source code was released on archive.org in 2021.{{Cite web|url=https://archive.org/details/eye-of-the-beholder-ii-engine-westwood-studios-1991-source-code.-7z|title = Eye of the Beholder II Engine Westwood Studios 1991 Source Code}}

Falcon 4.0

|1998

|2000

|Windows

|Combat flight simulator

|MicroProse

|A 2000 source code leak{{cite web|url=http://www.cleared-to-engage.com/2011/03/12/interview-with-kevin-klemmick-lead-software-engineer-for-falcon-4-0/|title=Interview with Kevin Klemmick – Lead Software Engineer for Falcon 4.0 | publisher=Cleared-To-Engage |date=2011-03-12 |first=Giorgio |last=Bertolone |access-date=2014-08-31 |quote=[C2E] In 2000 the source code of Falcon 4.0 leaked out and after that groups of volunteers were able to make fixes and enhancements that assured the longevity of this sim. Do you see the source code leak as a good or bad event? [Klemmick] "Absolutely a good event. In fact I wish I'd known who did it so I could thank them. I honestly think this should be standard procedure for companies that decide not to continue to support a code base."|url-status=usurped|archive-url=https://web.archive.org/web/20110318015840/http://www.cleared-to-engage.com/2011/03/12/interview-with-kevin-klemmick-lead-software-engineer-for-falcon-4-0 |archive-date=2011-03-18}} by a former developer allowed unofficial community development, including upgrades, improved graphics, and bug fixes. In 2013 the source code of one of the community development branches was released to a GitHub repository under a questionable BSD license.{{cite web|url=https://github.com/FreeFalcon/freefalcon-central/ |title=FreeFalcon |quote=Legal - FreeFalcon doesn't have the cleanest history regarding its terms of use, but that all ends here. The code is now licensed under the rather liberal BSD 2-clause license; for the first time in its history, FreeFalcon is truly free. See the LICENSE.md file for the full text of the license. |publisher=GitHub |date=2013-01-24 |access-date=2013-09-11 |url-status=live |archive-url=https://web.archive.org/web/20151025230348/https://github.com/FreeFalcon/freefalcon-central/ |archive-date=2015-10-25 }}

Fall Guys: Ultimate Knockout

|2020

|2021

|Windows

|Battle royale game

|Mediatonic

|Intermediate C++ source code (transpiled from C# with Unity's IL2CPP compiler) accidentally included with a 2021 update.

Fate

|2005

|2015

|Windows

|Action RPG

|WildTangent

|Inadvertently made available when Fate and its sequel Fate: Undiscovered Realms were offered through a May 2015 Humble Bundle. The download link provided to purchasers for the DRM-Free copy lead to an apparently current dump of the source code. This was available for several days before it was corrected.{{Cite web|url=https://steamcommunity.com/app/246840/discussions/0/617335934142845884/|title=Steam Discussions: Is the DRM free version in that Humble Bundle the source code?|date=2015-05-17|archive-url=https://web.archive.org/web/20200505154350/https://steamcommunity.com/app/246840/discussions/0/617335934142845884/|archive-date=2020-05-05}}

Far Cry

|2004

|2023

|Various

|First-person shooter

|Crytek

|The source code was released on archive.org in 2023.{{Citation |title=Far Cry 1.34 Complete |url=https://archive.org/details/far-cry-1.34-complete |access-date=2023-07-01}}

Football Director DS

|2008

|2024

|Nintendo DS

|Sports

|Sports Director Limited

|The source code was released on GitHub in 2024 by its designer and programmer Roger Womack.{{Citation |title=FootballDirectorDS |url=https://github.com/rwomack/FootballDirectorDS |access-date=2025-05-11}}

The F.A. Premier League Stars

|2000

|2016

|Windows

|Sports

|Electronic Arts

|Source code found in a Windows prototype build.{{cite web | url=https://hiddenpalace.org/F.A._Premier_League_Stars_(Nov_23,_1999_prototype_and_source_code) | title=F.A. Premier League Stars (Nov 23, 1999 prototype and source code) - Hidden Palace }}

FIFA 97

|1996

|1996

|Windows

|Sports

|Electronic Arts

|Around 1996 Electronic Arts accidentally put the game's source code on a demo disc.[https://kotaku.com/5882488/when-ea-sports-accidentally-put-a-games-source-code-on-a-demo-disc When EA Sports Accidentally Put a Game's Source Code on a Demo Disc] by Luke Plunkett on kotaku.com (02-05-2012)[https://assemblergames.com/threads/1997-fifa-partial-source-code-leak.55863/ 1997-fifa-partial-source-code-leak] {{Webarchive|url=https://web.archive.org/web/20180123190741/https://assemblergames.com/threads/1997-fifa-partial-source-code-leak.55863/ |date=2018-01-23 }} on assemblergames.com

FIFA 21

|2020

|2021

|Various

|Sports

|Electronic Arts

|In 2021, hackers leaked 751 GB of data relating to the development of FIFA 21, including source code, assets, and the Frostbite game engine.{{Cite web |date=2021-08-03 |title=Hackers Release Stolen 'FIFA 21' Source Code After Failed Extortion Bid |url=https://www.ibtimes.com/hackers-release-stolen-fifa-21-source-code-after-attempt-extort-ea-fails-3264990 |access-date=2025-03-02 |website=International Business Times |language=en-US}}{{Cite web |last=published |first=Aaron Klotz |date=2021-08-02 |title=Hackers Dump FIFA 21 Code Online After Blackmail Attempt |url=https://www.tomshardware.com/news/hackers-fail-to-blackmail-ea-fifa-21 |access-date=2025-03-02 |website=Tom's Hardware |language=en}}

Forsaken

|1998

|2007

|Windows

|6DOF shooter

|Probe Entertainment

|In 2007, nine years after the first release, the source code became available to the public.[https://www.3dfxzone.it/dir/headlines/projectx-brings-forsaken-on-modern-systems-and-lets-you-to-free-play-the-3d-shooter-at-1920-x-1080/ ProjectX brings Forsaken on modern systems and lets you to free play at 1920 x 1080] {{webarchive|url=https://web.archive.org/web/20150722052917/http://www.3dfxzone.it/dir/headlines/projectx-brings-forsaken-on-modern-systems-and-lets-you-to-free-play-the-3d-shooter-at-1920-x-1080/ |date=2015-07-22 }} (2013-03-30) The game's community took up the game and kept updating and porting the game via a GitHub repository under a GPL license.[https://github.com/ForsakenX ForsakenX] {{webarchive|url=https://web.archive.org/web/20151026025957/https://github.com/ForsakenX |date=2015-10-26 }} on github.com[https://github.com/ForsakenX/forsaken/blob/master/LICENSE license] {{webarchive|url=https://web.archive.org/web/20151026025957/https://github.com/ForsakenX/forsaken/blob/master/LICENSE |date=2015-10-26 }} on GitHub.

Friday the 13th: The Game

|2017

|2021

|Various

|Survival horror

|IIIFonic, Black Tower Studios

|Partial Unreal Engine project leaked via Google Drive on 2 December 2021.

Frogger (1997)

|1997

|2023

|PlayStation, Windows

|Action

|SCE Studio Cambridge

|PlayStation and Windows source code leaked on 4chan on 27 September 2023.{{cite web | url=https://github.com/HighwayFrogs/frogger-psx | title=HighwayFrogs/Frogger-PSX | website=GitHub }}

Frogger (Game.com)

|1999

|2011

|Game.com

|Action

|Hasbro Interactive

|Source code included with Game.com official emulator.{{Cite web|url=https://hiddenpalace.org/Official_game.com_emulator_and_debugger|title=Official game.com emulator and debugger|website=hiddenpalace.org}}

Frogger 2: Swampy's Revenge

|2000

|2025

|PlayStation, Windows, Dreamcast, Game Boy Color, Nintendo 64

|Action

|Blitz Games

|Full development archives released in 2025.{{cite web | url=https://hiddenpalace.org/Assets/Frogger_2:_Swampy%27s_Revenge/Frogger_2_Dev_Archives | title=Assets/Frogger_2:_Swampy%27s_Revenge/Frogger_2_Dev_Archives | website=Hidden Palace }}

Gears of War

|2006

| Unknown

| Xbox 360 Windows

|Third-person shooter

| Epic Games

| While the exact date and source of the leak isn't commonly known, There are two versions of leaked source code for gears of war 1, both of which contain a playable build while only one contains uncompiled map sources in addition to the build and source code. The first version is just a 2006 English build with Xbox 360 controller icons in-place of pc one's. And the other version is a 2007 Chinese localized build with regular pc mouse and keyboard icons.

Glover

|1999

|2024

|PlayStation

|Platformer

|Blitz Games

|On 14 January 2024, the PlayStation source code and numerous builds were uploaded by Codebound to the Internet Archive.{{Cite tweet |author=CodeBound |user=_codebound_ |number=1746704572410679766 |date=2024-01-15 |title=For today's release: 12 builds of Glover for the Sony PlayStation, two versions of the source code, and documents and resources relating to the game's development. |access-date=2024-01-14}}

Grand Theft Auto V

|2013

|2023

|Windows

|Action-adventure

|Rockstar North

|Source code obtained as part of the September 2022 Grand Theft Auto VI leaks. Released publicly on 25 December 2023, as a form of protest against the sentencing of the perpetrator of the leaks.{{cite web | url=https://www.tomshardware.com/tech-industry/cyber-security/purported-gta-5-source-code-distributed-on-telegram-data-spill-comes-a-year-after-the-lapsusdollar-rockstar-smash-and-grab | title=Purported GTA 5 source code distributed on Telegram - data spill comes a year after the Lapsus$ Rockstar smash and grab | date=26 December 2023 }}{{cite web | url=https://www.guru3d.com/story/gta-5-source-code-leak-a-year-after-rockstar-hack/ | title=GTA 5 Source Code Leak: A Year After Rockstar Hack | date=27 December 2023 }}

Guilty Gear Strive

|2021

|2025

|Xbox One, PlayStation 4, Windows

|Fighting game

|Arc System Works

|During May 2025 several prototype builds of the game leaked, eventually followed by a 122GB archive of the games source code being made available on torrent trackers. {{cite web | url=https://www.dexerto.com/gaming/guilty-gear-strive-source-code-leak-explained-season-5-characters-discovered-3193826/ | title=Guilty Gear Strive source code leak explained: Season 5 characters discovered | date=10 May 2025}}

GunZ: The Duel

|2005

|2011

|Windows

|Third-person shooter

|MAIET Entertainment

|In 2011 the source code of GunZ 1.5 became available online.[https://ragezone.com/2011/11/20/gunz-1-5-source-code-released/ Gunz 1.5 Source Code released.] {{webarchive|url=https://web.archive.org/web/20140724000601/http://ragezone.com/2011/11/20/gunz-1-5-source-code-released/ |date=2014-07-24 }} on ragezone.com (20 November 2011)

Gwent: The Witcher Card Game

|2018

|2021

|Windows

|Collectible card game

|CD Projekt Red

|Source code obtained in a 2021 ransomware attack against CD Projekt Red, and was leaked to 4chan on 9 February 2021.{{cite web|url=https://www.pcmag.com/news/hackers-trying-to-auction-source-code-stolen-from-cd-projekt-red|title=Hackers Trying to Auction Source Code Stolen From CD Projekt Red|website=PC Magazine|date=10 Feb 2021|access-date=10 Feb 2021|last=Kan|first=Michael}}

Hägar the Horrible

|1992

|2021

|Commodore 64

|Platform

|Kingsoft

|Source code for the Commodore 64 version was uploaded to archive.org in 2021.{{Cite web|url=https://archive.org/details/hagar-the-horrible-c-64-kingsoft-1992-source-code.-7z|title=Hagar The Horrible C64 Kingsoft 1992 Source Code|via=Internet Archive}}

Half-Life 2

|2004

|2003

|Windows

|FPS

|Valve

|An alpha version of Half-Life 2{{'s}} source code was leaked in 2003, a year before the game's release.{{Cite web|url=https://www.eurogamer.net/articles/2011-02-21-the-boy-who-stole-half-life-2-article|title=The boy who stole Half-Life 2|last=Parkin|first=Simon|date=2014-05-25|website=Eurogamer|language=en|access-date=2019-12-01}} A complete snapshot of the game from 2017 also became public in the 2020 Source Engine leak.{{Cite web|url=https://arstechnica.com/gaming/2020/04/valve-responds-to-source-code-leak-csgo-players-are-fine-maybe-not-tf2s/|title=Valve confirms code leak for two online games|date=2020-04-23|website=Ars Technica|language=en|access-date=2023-12-14}}

Halo Wars

|2009

|2021

|Xbox 360

|RTS

|Ensemble Studios

|Source code for a prototype version dated 3 months before the games release was leaked in 2021.{{Cite web|url=https://archive.org/details/halo-wars-full-source-code-2008|title=Halo Wars Full Source Code ( Dec 12, 2008)|year=2008}}

Hard Drivin'

|1989

|2024

|Atari ST

|Sim racing

|Tengen

|On January 25, 2024, the source code for the Atari ST conversion of Hard Drivin{{'}}, the Sega Genesis conversion of RoadBlasters and the Sega Genesis version of R.B.I. Baseball '94 was uploaded to the Internet Archive.{{Ubl|{{cite web|url=https://archive.org/details/road-blasters-genesis-source-code-graphics-disk-1-of-2|title=Road Blasters (Genesis) Source Code & Graphics Disk 1 of 2|date=15 February 1991 |access-date=2024-01-27}}|{{cite web|url=https://archive.org/details/road-blasters-genesis-source-code-graphics-disk-2-of-2|title=Road Blasters (Genesis) Source Code & Graphics Disk 2 of 2|date=15 February 1991 |access-date=2024-01-27}}|{{cite web|url=https://archive.org/details/source-code-for-rbi-94-sega-genesis|title=Source Code For RBI 94 Sega Genesis|date=15 February 1994 |access-date=2024-01-27}}|{{cite web|url=https://archive.org/details/game-source-atari-st-hard-drivin|title=Game Source Atari ST Hard Drivin|date=15 February 1990 |access-date=2024-01-27}}}}

Harry Potter and the Chamber of Secrets

|2002

|2020

|Windows

|Action-adventure

|KnowWonder

|Source code from a prototype version was leaked in 2020.{{Cite web|url=https://archive.org/details/Harry-Potter-2-PC-Prototype|title=Harry Potter and the Chamber of Secrets IBM PC Game Prototype (HP 2 CoS)|first=KnowWonder|last=Electronic Arts|date=6 September 2002|via=Internet Archive}}

Heavenly Sword

|2007

|2016

|PlayStation 3

|Action-adventure

|Ninja Theory

|Source code was posted online in 2016, and later partially reuploaded to GitHub in 2019.{{Cite web|url=https://x.com/xeeynamo/status/1189502854236704769|title=The entire source code of Heavenly Sword has been leaked.|year=2019}}

Hexen: Beyond Heretic

|1995

|2024

|DOS

|First-person shooter

|id Software

|On a CD-ROM containing Doom's Macintosh source code that appeared on eBay was also some of the original DOS source code for Hexen. Once purchased, it later found its contents online on March 19, 2024.

Hexen: Beyond Heretic

|1995

|2024

|Macintosh

|First-person shooter

|id Software

|A CD-ROM containing Hexen's Macintosh source code was sold on ebay on Oct 6, 2024. Its contents have not yet been found online.

Home Alone 2: Lost in New York

|1992

|2016

|NES

|Action game

|Imagineering

|Game source released of the NES game in 2016 by Frank Cifaldi after finding it on an old hard drive.{{cite web |last1=Cifaldi |first1=Frank |author-link1=Frank Cifaldi |title=I uh, found the source code for Home Alone 2 for the NES on an old hard drive, if...anyone wants that? |url=https://twitter.com/frankcifaldi/status/738136827161255938 |website=Twitter |access-date=30 March 2020 |archive-url=https://web.archive.org/web/20160603121603/https://twitter.com/frankcifaldi/status/738136827161255938 |archive-date=3 June 2016 |date=1 June 2016 |url-status=live}}[https://forums.nesdev.com/viewtopic.php?f=5&t=14339 Home Alone 2 (NES) source code found/made available] on nesdev.com

Hulk

|2003

|2021

|Various

|Action

|Radical Entertainment

|Source code released on 4chan on 22 August 2021.

Jimmy Neutron vs. Jimmy Negatron

|2002

|2022

|Game Boy Advance

|Action

|Human Soft

|Source code, artwork and builds from the Game Boy Advance version were anonymously leaked on 4chan on 8 November 2022. Among these are various character models and assets used in the production of the film Jimmy Neutron: Boy Genius.{{cite web | url=https://archive.org/details/jnnegatron-source.-7z | title=Jimmy Neutron vs. Jimmy Negatron GBA Source Code: THQ: Free Download, Borrow, and Streaming }}

Joust

|1982

|2021

|Arcade

|Action game

|Williams Electronics

|On 7 January 2021, Jason Scott uploaded to GitHub the source code for the original arcade version of Joust.{{Cite web|url=https://github.com/historicalsource/joust|title=historicalsource/joust|date=25 January 2021|via=GitHub}}

Kelly Slater's Pro Surfer

|2002

|2021

|PlayStation 2

|Sports game

|Treyarch

|Source code found in a ZIP file in a prototype version of the PlayStation 2 version.{{Cite web|url=https://hiddenpalace.org/Kelly_Slater's_Pro_Surfer_(Jul_15,_2002_prototype)|title=Kelly Slater's Pro Surfer (Jul 15, 2002 prototype)|website=hiddenpalace.org}}

Killer7

|2005

|2016

|GameCube

|Action-adventure game

|Grasshopper Manufacture

|Sources and assets from the GameCube game were found in October 2016 on an open webserver.[http://assemblergames.com/l/threads/gamecube-killer7-source-code.63865/ gamecube-killer7-source-code] {{webarchive|url=https://web.archive.org/web/20161230231712/http://assemblergames.com/l/threads/gamecube-killer7-source-code.63865/ |date=2016-12-30 }} on assemblergames.com (October 2016)

King's Quest III

|

|

|DOS

|Adventure

|Sierra Entertainment

|During October 25–27, 2022, Jason Scott uploaded to GitHub 13 repositories containing source code for a variety of video games.

Lethal Enforcers I & II

|1997

|1997

|PlayStation

|Rail shooter

|Konami

|Source code hidden inside a dummy file.{{Cite web|url=https://tcrf.net/Lethal_Enforcers_I_&_II|title=Lethal Enforcers I & II - The Cutting Room Floor|website=tcrf.net}}

Leisure Suit Larry in the Land of the Lounge Lizards

|1987

|2022

|DOS

|Adventure

|Sierra Entertainment

|During October 25–27, 2022, Jason Scott uploaded to GitHub 13 repositories containing source code for a variety of video games. Both the original and the VGA remake were included.

Leisure Suit Larry Goes Looking for Love (in Several Wrong Places)

|1988

|2022

|DOS

|Adventure

|Sierra Entertainment

|During October 25–27, 2022, Jason Scott uploaded to GitHub 13 repositories containing source code for a variety of video games. Both the original and the VGA remake were included.

Leisure Suit Larry III: Passionate Patti in Pursuit of the Pulsating Pectorals

|1989

|2022

|DOS

|Adventure

|Sierra Entertainment

|During October 25–27, 2022, Jason Scott uploaded to GitHub 13 repositories containing source code for a variety of video games.

Leisure Suit Larry 5: Passionate Patti Does a Little Undercover Work

|1991

|2022

|DOS

|Adventure

|Sierra Entertainment

|During October 25–27, 2022, Jason Scott uploaded to GitHub 13 repositories containing source code for a variety of video games.

Lineage II

|2003

|2003

|Windows

|MMORPG

|NCSOFT

|In 2003 a Chinese Hacker acquired the Lineage II source code, and sold it to someone who set up alternative servers. Shutdown by FBI in 2007.[http://www.mmorpg.com/lineage-2/news/fbi-shuts-down-lineage-ii-private-server-1000007104 fbi-shuts-down-lineage-ii-private-server] {{webarchive|url=https://web.archive.org/web/20170322111354/http://www.mmorpg.com/lineage-2/news/fbi-shuts-down-lineage-ii-private-server-1000007104 |date=2017-03-22 }} on mmorpg.com (2007)[https://web.archive.org/web/20071212021338/http://www.fbi.gov/page2/feb07/iptheft020107.htm CRACKING THE CODE Online IP Theft Is Not a Game] on FBI.gov (2007-02-01)

Mad Planets

|1983

|2021

|Arcade

|Multidirectional shooter

|Gottlieb

|Uploaded to the Internet Archive by Jason Scott on 20 May 2021.{{Cite tweet |last=Scott |first=Jason |author-link=Jason Scott |user=textfiles |number=1395395500405313539 |date=20 May 2021 |title=And now: The full source code to the 1983 game MAD PLANETS, written by Kan Yabumoto for Gottlieb. Scanned sheet by sheet and with full comments and explanations by Yabumoto, who died in 2017. |access-date=20 May 2021 |link= |url-status=live |archive-url=https://web.archive.org/web/20210520174256/https://twitter.com/textfiles/status/1395395500405313539 |archive-date=20 May 2021 |ref=}}

Manic Miner

|2002

|2022

|Game Boy Advance

|Platformer

|Jester Interactive

|Released on 20 February 2022, by Forest of Illusion.{{Cite tweet |author=Forest of Illusion |user=forestillusion |number=1495323366449827844 |date=20 February 2022 |title=Today we have released the full source code to the Game Boy Advance port of Manic Miner by Jester Interactive! Also included is a build of the game dated as being from March 7th, 2003! Massive thanks to March42 for sending this in for release. |access-date=20 February 2022 }}

Metal Arms: Glitch in the System

|2003

|2019

|GameCube

|Third-person shooter

|Sierra Entertainment

|Uploaded to archive.org in 2019.{{Cite web|url=https://archive.org/details/MA-SOURCE|title=Metal Arms: Glitch in the System Source Code|date=14 June 2003|via=Internet Archive}}

Metin 2

|2004

|?

|Windows

|MMORPG

|Ymir Entertainment

|The source of the leak is unknown for certain, it is said that an ex employee at Ymir Entertainment leaked the source code for revenge after he was fired.

Microsoft Entertainment Pack

|1996

|2004

|Windows

|Casual game

|Microsoft

|In the copies of Windows NT 4.0 and Windows 2000 source code which leaked back in 2004, there are 32-bit versions of Cruel, Golf, Pegged, Reversi, Snake (Rattler Race), Taipei and TicTactics.{{cite web |url=http://www.kuro5hin.org/comments/2004/2/15/71552/7795/119#119 |title=We Are Morons: a quick look at the Win2k source |archive-url=https://web.archive.org/web/20190508022037/http://www.kuro5hin.org/comments/2004/2/15/71552/7795/119#119 |archive-date=2019-05-08 |publisher=Kuro5hin.org |access-date=6 January 2012 }} [http://atdt.freeshell.org/k5/story_2004_2_15_71552_7795.html Alt URL] {{Webarchive|url=https://web.archive.org/web/20160909101357/http://atdt.freeshell.org/k5/story_2004_2_15_71552_7795.html |date=2016-09-09 }}

The Misadventures of Tron Bonne

|1999

|2020

|PlayStation

|Action-adventure

|Capcom

|Source code was obtained in a 2020 ransomware attack against Capcom.

MoHo

|2000

|2022

|Dreamcast

|Action

|Lost Toys

|Source code to the Dreamcast version was found and released in 2022.{{Cite web|url=https://github.com/LemonHaze420/DCMoHo|title=LemonHaze420/DCMoHo|date=15 September 2024|via=GitHub}}

Monopoly

|2000

|2018

|Windows

|Board

|Artech Studios

|The source code for the Microsoft Windows version of the 2000 video game Monopoly was leaked in August 2018.{{cite tweet|title=Today's release: The source code to Hasbro's 1999 #Monopoly Windows game. The code is dated after release: 29 October 2000, so this may be from a later international effort.|user=MrTalida|number=1025016038394613760|access-date=27 December 2019|language=en|archive-url=https://web.archive.org/web/20230515202117/https://twitter.com/MrTalida/status/1025016038394613760|archive-date=15 May 2023|url-status=live}}{{cite web |title=Full Source Code: Hasbro's Monopoly (Windows, 2000) - For reference and education |url=https://www.reddit.com/r/gamedev/comments/aid1od/full_source_code_hasbros_monopoly_pc_2000_for/ |website=/r/gamedev |access-date=27 December 2019 |date=21 January 2019}}

Mortal Kombat II

|1993

|2022

|Arcade

|Fighting

|Midway Games

|During October 25–27, 2022, Jason Scott uploaded to GitHub 13 repositories containing source code for a variety of video games, including the arcade version of Mortal Kombat II.{{cite web | url=https://github.com/historicalsource?tab=overview&from=2022-12-01&to=2022-12-30 | title=Historicalsource - Overview | website=GitHub }}

Mortal Kombat 3

|1994

|2023

|Arcade

|Fighting

|Midway Games

|In December 2023, Jason Scott uploaded the arcade source of Mortal Kombat 3.

Mortal Kombat Trilogy

|1996

|2018

|Various

|Fighting

|Midway Games

|Game source code for the Nintendo 64 version was leaked anonymously on 4chan, alongside the Windows, PS1, and Arcade source of Mortal Kombat 3.{{Cite web|url=https://www.dsogaming.com/news/the-source-codes-for-mortal-kombat-trilogy-nintendo-64-and-mortal-kombat-3-have-been-leaked-online/|title=The source codes for Mortal Kombat Trilogy Nintendo 64 and Mortal Kombat 3 have been leaked online|first=John|last=Papadopoulos|date=October 24, 2018}}{{Cite web|url=https://n4g.com/news/2213089/the-source-codes-for-mortal-kombat-trilogy-nintendo-64-and-mortal-kombat-3-have-been-leaked-online|title=The source codes for Mortal Kombat Trilogy Nintendo 64 and Mortal Kombat 3 have been leaked online|website=n4g.com}}

Monsters, Inc.

|2001

|2019

|PlayStation 2

|Platform

|Kodiak Interactive

|Source code and artwork for the PlayStation 2 version was uploaded to archive.org in 2019.{{Cite web|url=https://archive.org/details/monstersinc-code-assets|title=Monsters, Inc. PS2 source code and assets|date=March 19, 2002|via=Internet Archive}}

Mr Nutz 2

|1994

|2008

|Amiga

|Platformer

|Ocean Software

|Amiga game, source code prototype associated with Peter Thierolf.[http://assemblergames.com/l/threads/code-source-mr-nutz-2-md.21596/page-3 code-source-mr-nutz-2] {{webarchive|url=https://web.archive.org/web/20150707035731/http://assemblergames.com/l/threads/code-source-mr-nutz-2-md.21596/page-3 |date=2015-07-07 }} on assemblergames.com[http://gilgalad.arc-nova.org/vgscr/amiga.html amiga source] on gilgalad.arc-nova.org

Mr. Robot and His Robot Factory

|1983

|2019

|Apple II

|Platform

|Datamost

|In January 2019 Jason Scott uploaded the source code of this game to the Internet Archive.

The Muppets on the Go!

|1996

|2017

|Sega Pico

|Educational

|Climax Studios

|Source code found on a backup disc, among art assets and more.{{Cite web|url=https://archive.org/details/MuppetsOTGSource|title=The Muppets On The Go! - Source Code|via=Internet Archive}}

Myst

|1995

|2014

|Atari Jaguar

|Graphic adventure

|Cyan Worlds

|Source released in 2014 on atariage.com.

Narc

|1988

|2021

|Arcade

|Run and gun

|Williams Electronics

|Uploaded by Jason Scott to GitHub on April 6, 2021.

NBA Jam

|1993

|2021

|Arcade

|Sports video game

|Midway Games

|On April 6 2021, Jason Scott uploaded to GitHub the source code for the original arcade version of NBA Jam and NBA Jam: Tournament Edition.

NBA Jam Extreme

|1996

|2017

|Various

|Sports game

|Sculptured Software

|In February 2017 the source code was discovered on an archival CD liquidated by Acclaim Entertainment during their bankruptcy sale.{{cite web|url=https://www.techspot.com/news/68051-nba-jam-extreme-source-code-assets-also-discovered.html |date=6 February 2017 | title=NBA Jam Extreme source code, assets also discovered in Acclaim bankruptcy sale haul| author=Knight, Shawn|website=techspot.com }} It was subsequently sold on eBay for $500.

NBA Jam 2001

|2000

|2023

|Game Boy Color

|Sports game

|DC Studios

|On November 7, 2023, the source code and numerous builds were uploaded by Codebound to the Internet Archive.{{Cite tweet |author=CodeBound |user=_codebound_ |number=1721751462970036396 |date=2023-11-07 |title=For today's release, here are 3 builds and the final source code for NBA Jam 2001 for the Gameboy Color! Two of the builds use the early title "NBA Jam 2000", as if it was originally a port of the Nintendo 64 version for the Gameboy Color. |access-date=2023-11-22 |url-status=live |archive-url=https://archive.today/20231122213246/https://twitter.com/_codebound_/status/1721751462970036396 |archive-date=2023-11-22}}

NBA Hangtime

|1996

|2021

|Arcade

|Sports game

|Midway Games

|Uploaded by Jason Scott to GitHub on April 6, 2021.

NFL Blitz 2000

|1999

|2023

|Arcade

|Sports game

|Midway Games

|During October 18–19, 2023, Jason Scott uploaded to GitHub 7 repositories containing source code for a variety of video games and in-house development utilities, including the arcade version of NFL Blitz 2000 and San Francisco Rush: The Rock.{{cite web | url=https://github.com/historicalsource?tab=overview&from=2023-10-01&to=2023-10-31 | title=Historicalsource - Overview | website=GitHub }}

NHL Hockey

|1991

|2024

|Genesis

|Sports game

|Park Place Productions

|On February 16, 2024, the source code was uploaded by Codebound to the Internet Archive.{{Cite tweet |author=CodeBound |user=_codebound_ |number=1758669344975024576 |date=2024-02-16 |title=For today's release: Source code to the SEGA Genesis/Mega Drive version of NHL Hockey. Developed by Park Place Productions and published by EA, this game is notable for being the first game in the NHL Hockey series. Check it out here |access-date=2024-02-16 |url-status=live |archive-url=https://archive.today/20231122213246/https://twitter.com/_codebound_/status/1758669344975024576 |archive-date=2023-11-22}}

NHL Open Ice

|1996

|2021

|Arcade

|Sports game

|Midway Games

|Uploaded by Jason Scott to GitHub on April 6, 2021.

Nickelodeon Party Blast

|2002

|2020

|Various

|Party game

|Data Design Interactive

|Found a developer's HDD in September 2020, along with many other Data Design Interactive games.{{Cite web|url=https://gitlab.march.geek.gp/data-design-interractive|title=Data Design Interactive|website=GitLab}}

Ninety-Nine Nights

|2006

|2021

|Xbox 360

|Hack and Slash

|Q Entertainment

|Source code from an unknown point of development was leaked in 2021, later uploaded to archive.org.{{Cite web|url=https://archive.org/details/ninety-nine-nights-unknown-xbox-360-source-code|title=Ninety Nine Nights (XBOX 360) ( Source Code) : Free Download, Borrow, and Streaming|website=Internet Archive}}

Ninja Hattori-kun

|1986

|2019

|Famicom

|Platformer

|Hudson Soft

|Uploaded to GitHub on December 24, 2019.{{GitHub|omuanko/nnjhtrkn|nnjhtrkn|link=no}}

Various Nintendo and Game Freak games

|1990-2024

|2020-2024

|Various

|Various

|Various

|Throughout 2020, the source code for several games by Nintendo (as well as console firmware) was leaked by anonymous users on 4chan. These include the first four (and seventh) generations of the Pokémon series and the firmware for the Nintendo 64, GameCube, and 3DS. See Nintendo data leak for more information. In 2024, a data leak similar to that of the Nintendo data leak occurred, when Game Freak was breached for more Pokémon games.

Oni

|2001

|2021

|Various

|Third-person shooter

|Bungie

|On April 29, 2021, an unknown source uploaded the source code to the Internet Archive.{{Cite web|url=https://archive.org/details/oni-source|title = Oni Bungie Source?}}

Outlaw Golf

|2002

|2021

|Various

|Golf

|Hypnotix

|On January 2, 2021, Forest of Illusion uploaded a .zip file recovered from a hard drive of Data Design Interactive containing the entire source code for the Windows, Xbox and GameCube versions of the game.[https://gbatemp.net/threads/source-code-for-outlaw-golf-released.580116/ source-code-for-outlaw-golf-released] on gbatemp.net

Pac-Man

|1982

|2019

|Atari 8-bit

|Maze

|Roklan Corp.

|In August 2019 the source code for the Atari 8-bit version was released by Kevin Savetz.{{cite web |title=Look what fell off the back of a truck! The original, commented source code for the Atari 8-bit version of Pac Man. [...] There are 2 versions there: the original from 1982 that compiled in Atari Macro Assembler, & a version adapted for the modern MADS assembler |url=https://twitter.com/KevinSavetz/status/1166385961024065538 |website=Twitter |access-date=27 December 2019 |date=27 August 2019}}{{cite web |title=Pac-Man Atari 800 Source Code |date=27 August 2019 |url=https://atariage.com/forums/topic/295360-atari-800-pac-man-source-code/ |access-date=27 December 2019 |quote=Hello from Fujiama! Here's something amazing that's turned up: the original, commented source code for the Atari 8-bit version of Pac Man.}}

Pachinko Dream

|1996

|1996

|PlayStation

|Pachinko

|Konami

|Source code found inside a dummy file.{{cite web | url=https://tcrf.net/Pachinko_Dream | title=Pachinko Dream - the Cutting Room Floor }}

Pesterminator: The Western Exterminator

|1990

|2019

|NES

|side-scrolling

|Color Dreams

|In November 2019 the NES source code was uploaded to the Internet Archive.[https://archive.org/details/pesterminatorsourcecode pesterminatorsourcecode] on the internet archive (2019)

Pinball Fantasies

|1994

|2020

|DOS

|Pinball

|FrontLine Design

|On 20 December 2020, Jason Scott uploaded to GitHub the source code for the DOS port of Pinball Fantasies.{{Cite web|url=https://github.com/historicalsource/pinballfantasies|title=historicalsource/pinballfantasies|date=3 March 2021|via=GitHub}}

Pocket Music

|2002

|2022

|Game Boy Color

|Music

|Jester Interactive

|Released on 23 February 2022, by Forest of Illusion.{{Cite tweet |author=Forest of Illusion |user=forestillusion |number=1496486316149972996 |date=23 February 2022 |title=Today we have released the source code (plus a few builds) of Pocket Music for the Game Boy Color by Jester Interactive! Contained within the source is an option to compile for USA or Europe. This is notable as the game was never released outside of Europe. |access-date=23 February 2022 }}

Pole Position

|1983

|2009

|Atari 2600

|Racing

|General Computer Corporation

|On 20 May 2009, Curt Vendel released the source code of the Atari 2600 conversion of Pole Position.{{cite web |last1=Vendel |first1=Curt |title=Source Code - Pole Position |url=https://atariage.com/forums/topic/144322-source-code-pole-position/ |website=AtariAge |access-date=17 April 2020 |archive-url=https://web.archive.org/web/20090924022920/http://www.atariage.com/forums/topic/144322-source-code-pole-position |archive-date=24 September 2009 |date=20 May 2009 |url-status=live}}

Police Quest: In Pursuit of the Death Angel

|1987

|2022

|DOS

|Adventure

|Sierra Entertainment

|During October 25–27, 2022, Jason Scott uploaded to GitHub 13 repositories containing source code for a variety of video games.

Postal III

|2011

|2020

|Windows

|First-person shooter

|Running with Scissors

|Leaked onto 4chan in June 2020, and contains pre-release Half-Life 2 and Team Fortress 2 content.{{Cite web|url=https://www.youtube.com/watch?v=0i2mQrEiw7g|title=POSTAL 3 + TEAM FORTRESS 2 2007 Builds/Design Docs LEAKED|date=11 June 2020 |via=www.youtube.com}}

Ragnarok Online 2

|2007

|2014

|Windows

|MMORPG

|Gravity

|Posted on a forum found through unknown means.{{Cite web|url=https://forum.ragezone.com/f576/ragnarok-online-2-official-source-1013652/|title=Ragnarok Online 2 Official Source Code ! - RaGEZONE - MMO development community|website=forum.ragezone.com|date=4 July 2014 }}

Raid 2020

|1989

|2019

|Atari 2600

|Side-scrolling action game

|Color Dreams

|Source code was found on a floppy disk and uploaded to archive.org in 2019.{{Cite web|url=https://archive.org/details/Raid-2020-Source-Code|title=Raid 2020 Source Code|date=17 December 1989|via=Internet Archive}}

Rat Attack!

|1998

|2024

|PlayStation

|Puzzle

|Pure Entertainment

|PlayStation source code obtained from a developer.{{Cite web|url=https://archive.org/details/rats-code|title=Rat Attack! PS1 Source Code|via=Internet Archive}}

Rayman Raving Rabbids (prototype only)

|2006

|2022

|Windows

|Party game

|Ubisoft

|Source code of an alpha platformer build of Rayman Raving Rabbids was obtained through unknown means and released on December 12, 2022. It also contains the tools and the source code from Ubisoft's Jade Engine.

Rayman 2: The Great Escape

|1999

|2022

|Nintendo DS

|Platformer

|Ubisoft

|Source code for Nintendo DS version was obtained through unknown means and released on February 3, 2022.{{Cite web|url=https://archive.org/details/rayman-2src-rabbids-src|title=Rayman 2 DS and Rayman Raving Rabbids Source Code|via=Internet Archive}} It also contains assets from the Nintendo 64 version of Donald Duck: Goin' Quackers.{{Cite web|url=https://tcrf.net/Development:Disney%27s_Donald_Duck:_Goin%27_Quackers_(Nintendo_64)|title=Donald Duck: Goin' Quackers (Nintendo 64)|via=The Cutting Room Floor}}

Re-Volt

|1999

|200?

|Windows

|Racing game

|Acclaim Studios London

|Members of the fan-base have acquired the source code of the game around 2004, which was leaked from an anonymous developer who worked on the Xbox Live port.{{cite web|url=http://www.betaarchive.com/forum/viewtopic.php?f=14&t=21160 |title=Revolt source code compile - BetaArchive |access-date=2012-02-29 |url-status=live |archive-url=https://web.archive.org/web/20111210155014/http://www.betaarchive.com/forum/viewtopic.php?f=14&t=21160 |archive-date=2011-12-10 }}[http://assemblergames.com/l/threads/revolt-on-the-xbox.52993/ Revolt on the Xbox] {{webarchive|url=https://web.archive.org/web/20170202050520/http://assemblergames.com/l/threads/revolt-on-the-xbox.52993/ |date=2017-02-02 }} by Borman on Assemblergames.com (Aug 3, 2014) The game community works since then on fan patches and source ports to new platforms like Linux, MacOS and OpenPandora.{{cite web|url=http://rv12.revoltzone.net/downloads.php |title=Re-Volt v1.2 Update - Downloads |access-date=2013-07-21 |url-status=live |archive-url=https://web.archive.org/web/20130801012021/http://rv12.revoltzone.net/downloads.php |archive-date=2013-08-01 }}[http://www.kotaku.com.au/2015/10/of-all-things-re-volt-is-still-being-patched/ Of All Things, Re-Volt Is Still Being Patched] {{webarchive|url=https://web.archive.org/web/20161203023831/http://www.kotaku.com.au/2015/10/of-all-things-re-volt-is-still-being-patched/ |date=2016-12-03 }} by Alex Walker on Kotaku (Oct 27, 2015)[http://re-volt.io/downloads downloads] {{webarchive|url=https://web.archive.org/web/20170305061015/http://re-volt.io/downloads |date=2017-03-05 }} on re-volt.io (2017)

Resident Evil: The Umbrella Chronicles

|2007

|2020

|Wii, PlayStation 3

|Rail shooter

|Capcom

|Source code was obtained in a 2020 ransomware attack against Capcom.

Revolution X

|1994

|2021

|Arcade

|Shooting gallery

|Midway Games

|Uploaded by Jason Scott to GitHub on April 6, 2021.

Robotron: 2084

|1982

|2021

|Arcade

|Multidirectional shooter

|Vid Kidz

|On 7 January 2021, Jason Scott uploaded to GitHub the source code for the original arcade version of Robotron: 2084.{{Cite web|url=https://github.com/historicalsource/robotron|title=historicalsource/robotron|date=25 January 2021|via=GitHub}}

Rolling Thunder

|1987

|2016

|Amiga

|side-scrolling action game

|Tiertex Design Studios

|The Amiga version became available on a community forum.[http://eab.abime.net/showpost.php?s=c009802fe60f0fd3fe60011ecae2c7d0&p=1082254&postcount=9 Preserving original Amiga game source codes] {{webarchive|url=https://web.archive.org/web/20170418082217/http://eab.abime.net/showpost.php?s=c009802fe60f0fd3fe60011ecae2c7d0&p=1082254&postcount=9 |date=2017-04-18 }} on eab.abime.net (April 2016)

Saints Row IV

|2013

|2024

|Windows, PlayStation 3, Xbox 360

|Action-adventure

|Volition

|On December 25 2024 a 59GB archive was posted to 4chan, containing the majority of the games source code & third-party libraries.{{Cite web|url=https://www.resetera.com/threads/the-saints-row-4-source-code-has-been-leaked.1069320/|title=The Saints Row 4 Source Code has been leaked}}

San Francisco Rush: The Rock

|

|2023

|Arcade

|

|Midway Games

|During October 18–19, 2023, Jason Scott uploaded to GitHub 7 repositories containing source code for a variety of video games and in-house development utilities, including the arcade version of NFL Blitz 2000 and San Francisco Rush: The Rock (an updated version of San Francisco Rush: Extreme Racing).

Silent Hill: Downpour

|2012

|2024

|PlayStation 3, Xbox 360

|Survival horror

|Vatra Games

|Source code was uploaded to Internet Archive on September 3rd, 2024.{{Cite web|url=https://archive.org/details/downpour_202409|title=Downpour Source|via=Internet Archive}}

The Simpsons: Hit & Run

|2003

|2021

|Various

|Racing

|Radical Entertainment

|Source code obtained from a developer and released on 4chan on August 21, 2021.

Sinistar

|1983

|2021

|Arcade

|Multidirectional shooter

|Williams Electronics

|Uploaded by Jason Scott to GitHub on April 6, 2021.

Smash TV

|1990

|2021

|Arcade

|Multidirectional shooter

|Williams Electronics

|Uploaded by Jason Scott to GitHub on April 6, 2021.

Sonic the Hedgehog 2

|1992

|2006

|Genesis

|Platformer

|Sega Technical Institute

|A small portion of the game's source code (as well as symbol tables) was discovered within the data of an early 1992 prototype build that was shown on Nick Arcade when it was found in 2006.{{Cite web |title=Proto:Sonic the Hedgehog 2 (Genesis)/Nick Arcade Prototype |url=https://tcrf.net/Proto:Sonic_the_Hedgehog_2_(Genesis)/Nick_Arcade_Prototype |access-date=November 1, 2022 |website=The Cutting Room Floor}} The code likely relates to the game's edit mode (or "debug mode") feature.{{cite web|url=http://info.sonicretro.org/Sonic_the_Hedgehog_2_(Nick_Arcade_prototype)/Hidden_content#Source_code|title=Sonic the Hedgehog 2 (Nick Arcade prototype) - Hidden content|website=Sonic Retro|access-date=February 27, 2025}}

Sonic Unleashed (mobile)

|2008

|2017

|J2ME

|Platformer

|Gameloft

|The J2ME mobile version was uploaded to GitHub in 2017, however it was taken down in 2020.{{Cite web|url=https://forums.sonicretro.org/index.php?threads/source-of-sonic-unleashed-java-mobile-found.39440/e%7B%7BDead+link%7Cdate=September+2023+%7Cbot=InternetArchiveBot+%7Cfix-attempted=yes+%7D%7D|title=Sonic and Sega Retro Forums|website=Sonic and Sega Retro Forums}}

Speedball 2: Brutal Deluxe

|1990

|2022

|PocketPC / Dreamcast

|Sports game

|The Bitmap Brothers

|Source code to the PocketPC and an unreleased Dreamcast port was found and released in 2022.{{Cite web|url=https://github.com/LemonHaze420/DCSpeedBall2|title=LemonHaze420/DCSpeedBall2|date=15 September 2024|via=GitHub}}

Spider-Man 2

|2023

|2023

|PlayStation 5

|Action-adventure

|Insomniac Games

|Source code leaked as part of a ransomware attack on Insomniac Games in December 2023.{{cite web |last1=Shanklin |first1=Will |title=Insomniac says it's 'saddened and angered' by massive leak of 1.3 million files |url=https://www.engadget.com/insomniac-says-its-saddened-and-angered-by-massive-leak-of-13-million-files-172822264.html?guccounter=1 |website=Engadget |access-date=17 January 2024 |date=22 December 2023}}

Spirit of Speed 1937

|2000

|2022

|Dreamcast

|Racing game

|Broadsword Interactive

|Source code to the Dreamcast version was found and released in 2022.{{Cite web|url=https://github.com/LemonHaze420/SOS1937|title=LemonHaze420/SOS1937|date=15 September 2024|via=GitHub}}

SpongeBob SquarePants: SuperSponge

|2001

|2016

|PlayStation, Game Boy Advance

|Platformer

|Climax Development

|The PlayStation version's development repository was released on GitHub in 2018, converted from an old Microsoft Visual SourceSafe repository.{{Cite web|url=https://github.com/philosophofee/SBSPSS|title=philosophofee/SBSPSS|date=13 March 2021|via=GitHub}} Curiously, it was discovered that the game contained code from the Linux kernel (specifically the vsprintf function, presumably used for debugging), and therefore violates the GNU General Public License. Source code from a very early build of the GBA version was also found.{{Cite web|url=https://archive.org/details/sbagbarchive|title=SpongeBob SquarePants: SuperSponge GBA Roms + Design Backup|date=15 March 2001|via=Internet Archive}}

S.T.A.L.K.E.R.: Clear Sky (X-Ray Engine 1.5.10)

|2008

|2014

|Windows

|FPS

|GSC Game World

|In August 2014 the source code for the game's X-Ray Engine 1.5.10 became available on GitHub under a non-open-source license.[https://github.com/OpenXRay/xray xray] {{webarchive|url=https://web.archive.org/web/20160721130152/https://github.com/OpenXRay/xray |date=2016-07-21 }} on github.com (August 2014) The successor's engine, X-ray 1.6.02, became available too.[https://github.com/OpenXRay/xray-16 xray-16] {{webarchive|url=https://web.archive.org/web/20160721130435/https://github.com/OpenXRay/xray-16 |date=2016-07-21 }} on github.com[http://boilingsteam.com/s-t-a-l-k-e-r-how-the-opengl-port-is-shaping-up/ S.T.A.L.K.E.R.: How The OpenGL Port is Shaping Up] {{webarchive|url=https://web.archive.org/web/20170216054216/http://boilingsteam.com/s-t-a-l-k-e-r-how-the-opengl-port-is-shaping-up/ |date=2017-02-16 }} on boilingsteam.com (1 November 2015) As of October 2019 the xray-16 engine community fork, "OpenXRay", achieved compiling state and support for the two games Call of Pripyat and Clear Sky with build 558.[https://github.com/OpenXRay/xray-16/releases OpenXRay (build 558)] on GitHub

Starbound

|2016

|2023

|Windows

|Sandbox game

|Chucklefish

|Leaked onto 4chan on 18 June 2023.

Stargate

|1981

|2021

|Arcade

|Scrolling shooter

|Vid Kidz

|On 7 January 2021, Jason Scott uploaded to GitHub the source code for the original arcade version of Stargate.{{Cite web|url=https://github.com/historicalsource/stargate|title=historicalsource/stargate|date=25 January 2021|via=GitHub}}

Star Trek: New Worlds

|2000

|2021

|Windows

|Real-time strategy

|Binary Asylum

|Source code from a prototype build was uploaded to archive.org in 2021.{{Cite web|url=https://archive.org/details/990901-1219|title=Star Trek New Worlds Source Code : Binary Asylum : Free Download, Borrow, and Streaming|website=Internet Archive}}

Star Wars

|1983

|2021

|Arcade

|Rail shooter

|Atari, Inc.

|During 13–16 October 2021, Jason Scott uploaded to GitHub 78 repositories containing source code to several Atari arcade games.{{Cite web|url=https://github.com/historicalsource?tab=overview&from=2021-10-01&to=2021-10-31|title=Historicalsource - Overview|website=GitHub}} Notable games include Tank 8/Ultra Tank, Quiz Show, Dominos, Sprint 2, Night Driver, Starship 1, Drag Race, Triple Hunt, Super Bug, Canyon Bomber, Avalanche, Super Breakout, Destroyer, Fire Truck, Tournament Table, Video Pinball, Football, Indy 4, Asteroids, Lunar Lander, Sky Diver, Missile Command, Red Baron, Asteroids Deluxe, Centipede, Warlords, Tempest, Battlezone, Space Duel, Gravitar, Liberator, Millipede, Quantum, Food Fight, Black Widow and Crystal Castles.

Star Wars Galaxies

|2003

|2014

|Windows

|MMO

|Sony Online Entertainment

|In 2013, a former Sony Online Entertainment employee leaked a copy of the 2010 production source code for the Star Wars Galaxies client, server, 3rd party libraries and development tools to a group of former players. The code was later leaked beyond its intended recipients and made available online.{{Cite web|url=https://www.rockpapershotgun.com/2015/12/30/star-wars-galaxy-mmo-preservation/|title=How Players Revived Star Wars Galaxies And EverQuest|last=Messner|first=Steven|date=2015-12-30|journal=Rock Paper Shotgun|language=en-US|access-date=2020-03-04}} Live, free to play public servers and public development groups have since come into existence. The source code is centrally maintained by the open-source project SWG Source and is available on GitHub.

Striker '96

|1996

|2022

|PlayStation

|Sports

|Rage Software

|Source code found on a Dreamcast development kit.{{Cite web|url=https://github.com/LemonHaze420/UEFAStriker96|title=GitHub repristory for PSX version of Striker '96|website=GitHub |date=27 December 2022 }}

Super 3D Noah's Ark

|1994

|2018

|SNES

|FPS

|Wisdom Tree

|In November 2018 the source code for SNES version was bought on eBay and released to the public.{{cite web|url=https://eludevisibility.org/2018/super-noahs-ark-3d-source-code |title=Super Noah's Ark 3D (USA) (Source Code)|date=2018}}

Swashbuckler

|1982

|2019

|Apple II

|Fighting

|Datamost

|In January 2019 Jason Scott uploaded the source code of this game to the Internet Archive.

The Lion King

|1994

|2025

|Game Boy, NES

|Platformer

|Imagineer

|Source code was released on January 1, 2025.{{Cite web |date=1 January 2025 |title=Assets/The Lion King/Game Boy and NES source code |url=https://hiddenpalace.org/Assets/The_Lion_King/Game_Boy_and_NES_source_code |access-date=2 January 2025 |website=Hidden Palace}}

Tempest 2000

|1994

|2008

|Atari Jaguar

|tube shooter

|Llamasoft

|On 24 August 2008, the source code of Tempest 2000 was released by the defunct Jaguar Sector II website under a CD compilation for Windows titled Jaguar Source Code Collection.{{cite web|last=Smith|first=Jason|url=http://www.jaguarsector.com/index.php?autocom=ibwiki&cmd=article&do=print_article&id=379|title=Atari Jaguar Timeline|website=jaguarsector.com|access-date=2019-08-19|archive-url=https://archive.today/20130629025431/http://www.jaguarsector.com/index.php?autocom=ibwiki&cmd=article&do=print_article&id=379|archive-date=2013-06-29}}{{cite web|last=Smith|first=Jason|url=http://www.jaysmith2000.com:80/Jagpriceguide.htm|title=Jaguar Sector II Atari Jaguar Software Price and Rarity Guide|website=jaysmith2000.com|access-date=2019-08-19|archive-url=https://web.archive.org/web/20131117222232/http://www.jaysmith2000.com/Jagpriceguide.htm|archive-date=17 November 2013}}

Three Dirty Dwarves

|1996

|2016

|Sega Saturn

|Beat 'em up

|SegaSoft

|Source code found in a prototype build.{{cite web | url=https://hiddenpalace.org/Three_Dirty_Dwarves_(Apr_17,_1996_prototype) | title=Three Dirty Dwarves (Apr 17, 1996 prototype) - Hidden Palace }}

Toontown Online

|2003

|2020

|Windows

|MMO

|Disney Interactive

|In 2020, a GitHub user named "satire6" uploaded two repositories containing full source code and assets from a 2010 build of the game.{{Cite web|url=https://github.com/satire6/Anesidora|title = Anesidora| website=GitHub | date=28 November 2022 }}{{Cite web|url=https://github.com/satire6/Spotify|title = Spotify| website=GitHub | date=27 October 2022 }}

Tomb Raider II

|1997

|2021

|PlayStation

|Action-adventure game

|Core Design

|Source code was released on archive.org in 2021.{{Cite web|url=https://archive.org/details/tomb-raider-ii-core-design-eidos-1997-source-code.-7z|title = Tomb Raider II Core Design Eidos 1997 Source Code}}

Tony Hawk's Underground

|2003

|2016

|Various

|Sports game

|Neversoft

|The game's C++ source code was leaked in February 2016 to GitHub.[https://github.com/thug1src/thug/ thug] {{webarchive|url=https://web.archive.org/web/20170627222332/https://github.com/thug1src/thug |date=2017-06-27 }} on github.com (February 2016)

Total Carnage

|1992

|2021

|Arcade

|Multidirectional shooter

|Midway Games

|Uploaded by Jason Scott to GitHub on April 6, 2021.

Trog

|1990

|2021

|Arcade

|Racing game

|Midway Games

|Uploaded by Jason Scott to GitHub on April 6, 2021.

Turrican III

|1994

|2008

|Amiga

|Run and gun

|Factor 5

|Amiga game, source code prototype associated with Peter Thierolf.

Turok: Dinosaur Hunter

|1997

|2017

|Nintendo 64

|First-person shooter

|Iguana Entertainment / Acclaim Entertainment

|In February 2017 the source code of the N64 version was sold on eBay for $2551.99 on a SGI Silicon Graphics Indy development machine which came from the Acclaim Entertainment liquidation. This source code was later released August 26, 2018, then reuploaded, non-encrypted to 4chan the following day.[http://www.ebay.com/itm/162360925581 Acclaim / Iguana Entertainment Turok Source Code Silicon Graphics Indy Computer] {{webarchive|url=https://web.archive.org/web/20170205095903/http://www.ebay.com/itm/162360925581 |date=2017-02-05 }} on ebay.com (February 2017){{Cite web|url=https://www.reddit.com/r/n64/comments/5o5wv5/just_like_that_turok_source_code_is_lost_again/|archive-url=https://web.archive.org/web/20170209092143/https://www.reddit.com/r/n64/comments/5o5wv5/just_like_that_turok_source_code_is_lost_again/|title=Just like that, Turok source code is lost again: n64|date=15 January 2017 |archive-date=February 9, 2017}}[https://www.vogons.org/viewtopic.php?f=5&t=51639&sid=1870723708d99f4749c9fb13716fd7e6&start=60 Acclaim Entertainment computers recovered from Brooklyn warehouse] {{webarchive|url=https://web.archive.org/web/20170205101028/https://www.vogons.org/viewtopic.php?f=5&t=51639&sid=1870723708d99f4749c9fb13716fd7e6&start=60 |date=2017-02-05 }} on vogons.org

Trespasser

|1998

|200?

|Windows

|Action-adventure, FPS

|DreamWorks Interactive

|The fan community got the original source code into hand by unknown means{{cite web |url=http://www.joystiq.com/2014/05/15/jurassic-park-trespasser-remake-aims-to-make-good-on-long-lost/ |quote=The community has even managed to get hold of the original source code, which they've set to work modifying. |title=Jurassic Park: Trespasser remake aims to make good on long-lost promises |first=Kat |last=Bailey |work=joystiq.com |date=2014-05-15 |access-date=2014-08-13 |archive-url=https://web.archive.org/web/20140814090024/http://www.joystiq.com/2014/05/15/jurassic-park-trespasser-remake-aims-to-make-good-on-long-lost/ |archive-date=2014-08-14 }} and created modifications and unofficial patches with it,[http://www.trescom.org/patches/ Patches] {{webarchive|url=https://web.archive.org/web/20150908050202/http://www.trescom.org/patches/ |date=2015-09-08 }} on trescom.org{{cite web|url=http://fabiensanglard.net/trespasser/index.php |title=Jurassic Park: Trespasser CG Source Code Review |date=2014-06-10 |access-date=2014-08-13 |first=Fabien |last=Sanglard |publisher=fabiensanglard.net |url-status=live |archive-url=https://web.archive.org/web/20140814015044/http://fabiensanglard.net/trespasser/index.php |archive-date=2014-08-14 }} the latest DirectX 9 port from 2016 and the development ongoing.[http://www.trescomforum.org/viewtopic.php?f=6&t=10674 1.07] {{webarchive|url=https://web.archive.org/web/20170522181023/http://www.trescomforum.org/viewtopic.php?f=6&t=10674 |date=2017-05-22 }} on trescomforum.org by Lee Arbuco (2016)

Ultima IX: Ascension

|1999

|2014

|Windows

|Role-playing video game

|Origin Systems

|In November 2014 the Ultima Codex Community was able to acquire the Ultima 9 source code from a former developer for offline archival to prevent permanent loss.{{cite web|url=http://ultimacodex.com/2014/11/ultima-9-the-source-code/ |publisher=Ultima Codex |author=WtF Dragon |date=2014-11-26 |access-date=2015-10-28 |title=Ultima 9: The Source Code |quote="As we continue to mark the occasion of Ultima 9's fifteenth anniversary, I'm pleased to announced that the seemingly dormant Ultima Source Code Offline Archival Project (USCOAP) has finally borne some fruit: the Ultima Codex has added the source code for Ultima 9 to its offline archive." |url-status=live |archive-url=https://web.archive.org/web/20151125210019/http://ultimacodex.com/2014/11/ultima-9-the-source-code/ |archive-date=2015-11-25 }}

Ultimate Mortal Kombat 3

|1994

|2009

|PlayStation

|Beat'em up

|Midway Games

|The source code and artwork from the PSX version were recovered from floppies in 2009.[http://lostmediawiki.com/Ultimate_Mortal_Kombat_3_(3DO_Cancelled_Port) Ultimate_Mortal_Kombat_3_(3DO_Cancelled_Port)] {{webarchive|url=https://web.archive.org/web/20160721130731/http://lostmediawiki.com/Ultimate_Mortal_Kombat_3_%283DO_Cancelled_Port%29 |date=2016-07-21 }} on lostmediawiki.com[http://assemblergames.com/l/threads/3do-ultimate-mortal-kombat-3.25019/ 3DO Ultimate Mortal Kombat 3] {{webarchive|url=https://web.archive.org/web/20160721125942/http://assemblergames.com/l/threads/3do-ultimate-mortal-kombat-3.25019/ |date=2016-07-21 }} on assemblergames.com (Nov 15, 2009)

Unreal Championship 2

|2005

|2020

|Windows

|First-person shooter

|Epic Games

Leaked to 4chan on July 29, 2020.
Up'n Down

|1984

|2018

|Atari 8-bit

|Racing, maze

|Sega

|On May 17, 2018, Kevin Savetz uploaded scans of the complete source code of the Atari 8-bit conversion of Up{{'}}n Down donated by Charlie Kulas.{{cite web |last1=Savetz |first1=Kevin |title=Here's the source code for Up'N Down, from Charlie Kulas. I believe this is a pre-production version of the game. I have a later version as well, which I haven't scanned yet. |url=https://atariage.com/forums/topic/234310-new-atari-8-bit-scans-and-video/?do=findComment&comment=4029644 |website=AtariAge |access-date=9 April 2020 |date=17 May 2018}}

Urban Assault

|1998

|2016

|Windows

|Real-time strategy

|TerraTools

|Found on eBay.{{Cite web|url=https://hiddenpalace.org/Urban_Assault_(Aug_17,_1998_prototype_with_source_code)|title=Urban Assault (Aug 17, 1998 prototype with source code) - Hidden Palace|website=hiddenpalace.org}}

Warcraft II: The Dark Saga

|1997

|2020

|PlayStation

|Real-time strategy

|Blizzard Entertainment

|Source code for the PlayStation version was uploaded to archive.org.{{Cite web|url=https://archive.org/details/warcraftIIsourcecodePSX|title=Warcraft II: The Dark Saga - PS1 source code|date=15 March 1997|via=Internet Archive}}

Various WayForward games

|200?-201?

|2024

|Various

|Various

|WayForward

|An anonymous seller obtained and sold the source code from many of WayForward's games, including A Boy and His Blob, Adventure Time: Hey Ice King! Why'd You Steal Our Garbage?!!, American Dragon: Jake Long - Rise of the Huntsclan, Barbie and the Magic of Pegasus, DuckTales: Remastered, Mighty Milky Way, Ping Pals, Sigma Star Saga, SpongeBob SquarePants: Creature from the Krusty Krab, SpongeBob SquarePants: Lights, Camera, Pants!, SpongeBob SquigglePants, The SpongeBob SquarePants Movie, Unfabulous, numerous LeapFrog Didj games and some unreleased titles.{{Cite web|title=WayForward lot|date=2 March 2024 |url=https://hiddenpalace.org/WayForward_lot |via=Hidden Palace}}

Wipeout

|1995

|2022

|PlayStation, Windows

|Racing

|Psygnosis

|Source code for the PlayStation and Windows versions uploaded by Forest of Illusion.{{cite tweet |author=Forest of Illusion |user=forestillusion |number=1508048268176990209 |date=March 27, 2022 |title=Today we have released the source code to Wipeout by Psygnosis, a futuristic racing game set in 2052! It includes the source to both the original PSX game as well as {{as written|i|t's [sic]}} Windows port. Please note that it is currently unknown if these sources are fully buildable.|access-date=March 27, 2022 |url-status=live |archive-url=https://archive.today/20220327145051/https://twitter.com/forestillusion/status/1508048268176990209 |archive-date=March 27, 2022}}

Wipeout Pulse

|2009

|2018

|PlayStation 2

|Racing game

|Sony

|The PlayStation 2 version contains source code hidden inside a dummy file.{{Cite web|url=https://tcrf.net/WipEout_Pulse_(PlayStation_2)|website=tcrf.net|title=The Cutting Room Floor: WipEout Pulse}} The source code is not for the game itself.

Wing Commander series

|1990

|2011

|Various

|Space simulator

|Origin Systems

|The long lost source code of Wing Commander I was given to the fan-community in August 2011 by a former developer for the purpose of long-time preservation.{{cite web|url=https://www.wcnews.com/news/update/11167 |title=BIG NEWS: Wing Commander I Source Code Archived! |quote=Thanks to an extremely kind donation from an anonymous former EA/Origin developer, the source code to the PC version of Wing Commander I is now preserved in our offline archive! Because of our agreement with Electronic Arts, we're not allowed to post recovered source code for download--but rest easy knowing that the C files that started it all are being kept safe for future reference. Our offline archive contains material that has been preserved but which can't be posted, including other source code and budget data from several of the games. |publisher=wcnews.com |date=2011-08-26 |access-date=2013-01-14 |url-status=live |archive-url=https://web.archive.org/web/20131109014042/http://www.wcnews.com/news/update/11167 |archive-date=2013-11-09 }} Later most other parts of the series followed.{{cite web|url=http://www.wcnews.com/news/2011/09/13/wing-commander-iii-the-source-code |title=Wing Commander III – The Source Code |quote=As we celebrate Wing Commander III's first widespread retail availability since the late 1990s, we would like to mention for anyone that we have the game's source code in our offline archive. We know it's frustrating for fans, who could do amazing things with this, to read these updates... but it's also in everyone's best interests to remind EA that we have the raw material from which they could port Wing Commander III to a modern computer or console. Just let us know! |publisher=wcnews.com |date=2011-09-13 |access-date=2013-01-14 |url-status=live |archive-url=https://web.archive.org/web/20131203031958/http://www.wcnews.com/news/2011/09/13/wing-commander-iii-the-source-code |archive-date=2013-12-03 }}{{cite web|url=http://www.wcnews.com/news/2012/04/03/wing-commander-iv-source-code |title=Wing Commander IV: Source Code |quote=As with Wing Commander I and Wing Commander III, we are pleased to announced that an extremely kind former EA/Origin employee has provided a copy of the Wing Commander IV source code for our preservation efforts! We can't offer it for download at this time, but it is now preserved for future use. |publisher=wcnews.com |date=2012-04-03 |access-date=2013-01-14 |url-status=live |archive-url=https://web.archive.org/web/20131109005741/http://www.wcnews.com/news/2012/04/03/wing-commander-iv-source-code |archive-date=2013-11-09 }}

William Shatner's TekWar

|1995

|2021

|Windows

|First-person shooter

|Capstone Software

|Released on archive.org in 2021.{{cite web | url=https://archive.org/details/tekwar_source | title=William Shatner's TekWar Source & executables | year=1995 }}

WWF WrestleMania: The Arcade Game

|1995

|2021

|Arcade

|Racing game

|Midway Games

|Uploaded by Jason Scott to GitHub on April 6, 2021.

The Witcher 3

|2015

|2024

|Windows

|Role-playing game

|CD Projekt Red

|In 2021 source code for the original release & an early version of the "next generation" update was sold for ransom online, with a passworded archive made available publicly. The group responsible later resurfaced in 2024 and released the password for the archive.{{cite web | url=https://www.dsogaming.com/news/the-witcher-3-next-gen-leaked-source-code-fully-unlocked/ | title=The Witcher 3 Next-Gen Leaked Source Code Fully Unlocked to Everyone | website=DSOGaming | date=19 April 2024 }}

Wizardry III: Legacy of Llylgamyn

|1983

|2021

|Various

|Role-playing game

|Sir-Tech

|The source code (for Apple) was released on archive.org in 2021.{{Cite web|url=https://archive.org/details/wizardry-iii-legacy-of-llylgamyn-sir-tech-1983-source-code.-7z|title=Wizardry III Legacy Of Llylgamyn Sir Tech 1983 Source Code|via=Internet Archive}}

Xbox system software

|2001

|2020

|Xbox

|Video game console operating system

|Microsoft

|In May 2020, the Xbox operating system source code was leaked.

Zork and other Infocom games

|1977

|2008

|Various

|Adventure game

|Infocom

|In 2008 a back-up with the source code of all Infocom's video games appeared from an anonymous Infocom source and was archived by the Internet Archive's Jason Scott.[http://ascii.textfiles.com/archives/3778 GET LAMP Raw Interviews Pretty Much Up] {{webarchive|url=https://web.archive.org/web/20160130150452/http://ascii.textfiles.com/archives/3778 |date=2016-01-30 }} on ascii.textfiles.com by Jason Scott (3 December 2012){{cite magazine|url=https://www.wired.com/2008/04/infocom-drive-t/ |title='Infocom Drive' Turns Up Long-Lost Hitchhiker Sequel |date=2008-04-18 |quote=Remnants of the unreleased sequel to Infocom's text adventure version of The Hitchhiker's Guide to the Galaxy have been made available to the public by Waxy.org. Playable prototypes, design docs, source code and a string of e-mails between Infocom designers and management provide a fascinating look at the game's turbulent, if aborted, development process. Among the assets included: design documents, e-mail archives, employee phone numbers, sales figures, internal meeting notes, corporate newsletters, and the source code and game files for every released and unreleased game Infocom made." |magazine=wired.com |first=Chris |last=Kohler |access-date=2016-01-26 |url-status=live |archive-url=https://web.archive.org/web/20160127000619/http://www.wired.com/2008/04/infocom-drive-t/ |archive-date=2016-01-27 }}{{cite web|url=http://waxy.org/2008/04/milliways_infocoms_unreleased_sequel_to_hitchhikers_guide_to_the_galax/ |title=Milliways: Infocom's Unreleased Sequel to Hitchhiker's Guide to the Galaxy |date=17 April 2008 |quote=From an anonymous source close to the company, I've found myself in possession of the "Infocom Drive" — a complete backup of Infocom's shared network drive from 1989.[...] Among the assets included: design documents, email archives, employee phone numbers, sales figures, internal meeting notes, corporate newsletters, and the source code and game files for every released and unreleased game Infocom made |publisher=waxy.org |first=Andy |last=Baio |access-date=2016-01-26 |url-status=live |archive-url=https://web.archive.org/web/20160126202150/http://waxy.org/2008/04/milliways_infocoms_unreleased_sequel_to_hitchhikers_guide_to_the_galax/ |archive-date=2016-01-26 }} On May 5, 2020, the Massachusetts Institute of Technology uploaded to GitHub the source code for 1977–1978 versions and 1977/1989 binaries of Zork.{{cite web |last1=Sharwood |first1=Simon |title=Source code for seminal adventure game Zork circa-1977 exhumed from MIT tapes, plonked on GitHub |url=https://www.theregister.com/2020/05/08/zork_source_code_released/ |website=The Register |publisher=Situation Publishing |access-date=9 July 2020 |archive-url=https://web.archive.org/web/20200618114245/https://www.theregister.com/2020/05/08/zork_source_code_released/ |archive-date=18 June 2020 |date=8 May 2020 |url-status=live}} On 12 February 2018, the source code for the original Z-machine interpreter for TRS-80 Color Computer by Infocom was leaked by Brian Moriarty.{{cite web |last1=Linville |first1=John W. |title=Z Intepreter Source for CoCo Recovered |url=https://retrotinker.blogspot.com/2018/02/z-intepreter-source-for-coco-recovered.html |website=Retro Tinker |access-date=22 November 2023 |archive-url=https://web.archive.org/web/20230714051703/https://retrotinker.blogspot.com/2018/02/z-intepreter-source-for-coco-recovered.html |archive-date=2023-07-14 |date=12 February 2018 |url-status=live}} On November 16, 2023, the source code for the original Infocom intepreter for a wide variety of platforms was uploaded to GitHub. On November 19, the source code for the IBM PC interpreter was uploaded by David Fillmore.{{cite web |last1=Plotkin |first1=Andrew |title=All that Infocom interpreter code |url=https://blog.zarfhome.com/2023/11/infocom-interpreters |website=Zarf Updates |access-date=22 November 2023 |archive-url=https://web.archive.org/web/20231122003635/https://blog.zarfhome.com/2023/11/infocom-interpreters |archive-date=22 November 2023 |date=21 November 2023 |url-status=live}}

Games with reconstructed source code

{{See also|List of game engine recreations}}

Once games, or software in general, become an obsolete product for a company, the tools and source code required to re-create the game are often lost or even actively destroyed and deleted.{{cite web|url=http://www.1up.com/features/missing-notable-games-lost-to-time|archive-url=https://web.archive.org/web/20121017162418/http://www.1up.com/features/missing-notable-games-lost-to-time|archive-date=17 October 2012| title=Among the Missing: Notable Games Lost to Time |date=2012-10-17|access-date=2015-06-19 |first=Todd |last=Ciolek |work=1up.com}}{{cite web|url=https://www.gamedeveloper.com/business/where-games-go-to-sleep-the-game-preservation-crisis-part-1 |title=Where Games Go To Sleep: The Game Preservation Crisis, Part 1 |first=John |last=Andersen |quote=The existence of decaying technology, disorganization, and poor storage could in theory put a video game to sleep permanently -- never to be played again. Troubling admissions have surfaced over the years concerning video game preservation. When questions concerning re-releases of certain game titles are brought up during interviews with developers, for example, these developers would reveal issues of game production material being lost or destroyed. Certain game titles could not see a re-release due to various issues. One story began to circulate of source code being lost altogether for a well-known RPG, preventing its re-release on a new console. |website=Gamasutra |access-date=10 January 2013 |date=27 January 2011 |url-status=live |archive-url=https://web.archive.org/web/20130422061043/http://www.gamasutra.com/view/feature/6271/where_games_go_to_sleep_the_game_.php?print=1 |archive-date=22 April 2013 }}{{cite web |url=http://www.arcade-history.com/?n=bubble-bobble&page=detail&id=343 |quote=In 1996, Taito announced that they lost the original source code program to Bubble Bobble following a reorganization - when it came to the recent ports and sequels, they had to work from program disassembly, playing the game and (mainly) the various home computer ports. |publisher=Arcade History |title=Bubble Bobble |date=11 September 2012 |access-date=10 January 2013|archive-url=https://web.archive.org/web/20120930080731/http://www.arcade-history.com/?n=bubble-bobble&page=detail&id=343 |archive-date=September 30, 2012}}{{cite web|url=http://kotaku.com/5028197/sega-cant-find-the-source-code-for-your-favorite-old-school-arcade-games |first=Adam |last=Barenblat |work=Kotaku |title=Sega Can't Find The Source Code For Your Favorite Old School Arcade Games |access-date=December 1, 2013 |date=July 25, 2008 |archive-url=https://web.archive.org/web/20131220054955/http://kotaku.com/5028197/sega-cant-find-the-source-code-for-your-favorite-old-school-arcade-games |archive-date=December 20, 2013}}[http://www.destructoid.com/silent-hill-hd-was-made-from-incomplete-code-228158.phtml Silent Hill HD was made from incomplete code] on Destructoid {{webarchive |url=https://web.archive.org/web/20131016115830/http://www.destructoid.com/silent-hill-hd-was-made-from-incomplete-code-228158.phtml |date=October 16, 2013 }}[http://www.gameoverviews.com/oh-my-silent-hill-hd-collections-sucked-because-konami-lost-the-source-code/ oh-my-silent-hill-hd-collections-sucked-because-konami-lost-the-source-code] on gameoverviews.com (2012)[http://www.siliconera.com/2013/06/25/kingdom-hearts-1-data-is-lost-square-had-to-recreate-everything-for-hd/ kingdom-hearts-1-data-is-lost-square-had-to-recreate-everything-for-hd] {{webarchive|url=https://web.archive.org/web/20170101001527/http://www.siliconera.com/2013/06/25/kingdom-hearts-1-data-is-lost-square-had-to-recreate-everything-for-hd/ |date=2017-01-01 }} on siliconera.com (2013) For instance, with the closure of Atari in Sunnyvale, California, in 1996, the original source codes of several milestones of video game history such as Asteroids and Centipede were all thrown out as trash.{{cite web|url=http://www.tomsguide.com/us/Atari-7800-Source-Code,news-4187.html |title=Atari 7800 Source Code Rescued – Atari released the source code for the 7800 console and games |access-date=9 January 2012 |date=7 July 2009 |first=Kevin |last=Parrish |publisher=tomsguide.com |archive-url=https://web.archive.org/web/20140422035825/http://www.tomsguide.com/us/Atari-7800-Source-Code%2Cnews-4187.html |archive-date=April 22, 2014 }}{{cite web|url=http://www.atarimuseum.com/videogames/consoles/7800/games/ |archive-url=http://webarchive.loc.gov/all/20090706155155/http://www.atarimuseum.com//videogames//consoles//7800//games// |archive-date=July 6, 2009 |title=7800 Games & Development |quote=These games were rescued from Atari ST format diskettes that were thrown out behind 1196 Borregas when Atari closed up in 1996. The Atari Museum rescued these important treasures and recovered them from the diskettes. |publisher=atari-museum.com |access-date=January 9, 2012 |year=2009 }}

When much time and manual work is invested, it is still possible to recover or restore a source code variant which replicates the program's functions accurately from the binary program. Techniques used to accomplish this are decompiling, disassembling, and reverse engineering the binary executable. This approach typically does not result in the exact original source code but rather a divergent version, as a binary program does not contain all of the information originally carried in the source code. For example, comments and function names cannot be restored if the program was compiled without additional debug information.

Using the techniques listed above within a "bottom-up" development methodology process, the re-created source-code of a game is able to replicate the behavior of the original game exactly, often being "clock-cycle accurate", and/or "pixel-per-pixel accurate". This approach is in contrast to that used by game engine recreations, which are often made using a "top-down" development methodology, and which can result in duplicating the general features provided by a game engine, but not necessarily an accurate representation of the original game.

class="wikitable sortable" style="font-size:90%;"
   Title   

!Original release

!Source-code reconstructed

!Genre

!Original developer

!Additional information

Albion

|1996 (DOS)

|2011

|Adventure game

|Blue Byte

|In 2011, via static recompilation from the original x86 binary executable a port for the ARM architecture of the Pandora handheld was created by fans.{{cite web|url=http://boards.openpandora.org/topic/5950-albion/ |title=Albion |date=2011-11-06 |author=M-HT |access-date=2014-04-03 |publisher=openpandora.org |url-status=live |archive-url=https://web.archive.org/web/20140407071307/http://boards.openpandora.org/topic/5950-albion/ |archive-date=2014-04-07 }}{{cite web|url=http://repo.openpandora.org/?page=detail&app=albion_sr |title=Albion |author=M-HT |date=2011-06-11 |access-date=2014-04-02 |publisher=repo.openpandora.org |quote=This is a port of the game's executable for Pandora (using static recompilation/binary translation). |url-status=live |archive-url=https://web.archive.org/web/20140331042620/http://repo.openpandora.org/?page=detail&app=albion_sr |archive-date=2014-03-31 }} The community still updates this recompiled version and released also Windows and Linux builds in 2015,{{cite web|url=http://boards.openpandora.org/topic/5950-albion/page-4#entry375940 |title=Albion |author=M-HT |date=2015-03-16 |access-date=2015-04-24 |publisher=boards.openpandora.org |quote=Here is a version for Windows, in case anyone is interested. Unpack it into the directory where Albion is installed - read the Readme for more information (use Albion.cmd to run the game). |url-status=live |archive-url=https://web.archive.org/web/20150423152054/http://boards.openpandora.org/topic/5950-albion/page-4 |archive-date=2015-04-23 }} source code available on GitHub under MIT.[https://github.com/M-HT/SR github.com/M-HT/SR] {{webarchive|url=https://web.archive.org/web/20170507113859/https://github.com/M-HT/SR |date=2017-05-07 }} on github.com

Another World

|1991

|2011

|Platform game

|Delphine Software International

|In 2011, Fabien Sanglard analysed Another World by reverse engineering and reconstructed, based on an earlier approach, a complete C++ source code variant of the internal virtual machine.{{cite web|url=http://toucharcade.com/2011/12/26/a-fascinating-look-under-the-hood-of-another-world/ |title=A Fascinating Look Under the Hood of 'Another World' |date=2011-12-26 |access-date=2013-10-14 |first=Blake |last=Patterson |publisher=toucharcade.com |url-status=live |archive-url=https://web.archive.org/web/20131109031735/http://toucharcade.com/2011/12/26/a-fascinating-look-under-the-hood-of-another-world/ |archive-date=2013-11-09 }}{{cite web|url=http://fabiensanglard.net/anotherWorld_code_review/index.php |title="Another World" Code Review |first=Fabien |last=Sanglard |date=2011-12-23 |publisher=fabiensanglard.net |quote=I spent two weeks reading and reverse engineering further the source code of Another World ("Out Of This World" in North America). I based my work on Gregory Montoir's "binary to C++" initial reverse engineering from the DOS executable. I was amazed to discover an elegant system based on a virtual machine interpreting bytecode in realtime and generating fullscreen vectorial cinematic in order to produce one of the best game of all time. |access-date=2013-01-14 |url-status=live |archive-url=https://web.archive.org/web/20130115213534/http://fabiensanglard.net/anotherWorld_code_review/index.php |archive-date=2013-01-15 }}

Bagman

|1982

|2010

|Arcade game

|Valadon Automation

|In 2010, the French programmer Jean-François Fabre reconstructed C source code from the game to port it to modern platforms.[http://jotd.pagesperso-orange.fr/bagman/index.html Bagman] {{webarchive|url=https://web.archive.org/web/20170308140240/http://jotd.pagesperso-orange.fr/bagman/index.html |date=2017-03-08 }} on jotd.pagesperso-orange.fr

Banjo-Kazooie

|1998 (Nintendo 64)

|2024

|Platform game

|Rare

|Decompiled in 2024 with code released on gitlab.com.[https://gitlab.com/banjo.decomp/banjo-kazooie Banjo-Kazooie] on gitlab.com

Bermuda Syndrome

|1995 (Windows)

|2007

|Adventure game

|Century Interactive

|After the end of support for the game, Gregory Montoir reverse engineered in 2007 the game engine and wrote a substitute which allowed the porting of the game to modern platforms,[http://cyxdown.free.fr/bs/ Bermuda Syndrome] {{webarchive|url=https://web.archive.org/web/20160721130540/http://cyxdown.free.fr/bs/ |date=2016-07-21 }} on cyxdown.free.fr[https://github.com/cyxx cyxx] {{webarchive|url=https://web.archive.org/web/20160721130209/https://github.com/cyxx |date=2016-07-21 }} on github.com like the OpenPandora handheld.[http://dl.openhandhelds.org/cgi-bin/pandora.cgi?0,0,0,0,26,451 Bermuda Syndrome for OpenPandora] {{webarchive|url=https://web.archive.org/web/20160721130351/http://dl.openhandhelds.org/cgi-bin/pandora.cgi?0%2C0%2C0%2C0%2C26%2C451 |date=2016-07-21 }} on openhandhelds.org

Boulder Dash

|1984 (C64)

|2016

|Arcade game

|First Star Software

|The C64 version was bit accurate reverse engineered by enthusiasts in month long work in 2016.[http://commodore.ninja/commodore-64-rem-the-lost-art-of-source-code-archeology/#more-24310 commodore-64-rem-the-lost-art-of-source-code-archeology] {{webarchive|url=https://web.archive.org/web/20160410061800/http://commodore.ninja/commodore-64-rem-the-lost-art-of-source-code-archeology/ |date=2016-04-10 }} on commodore.ninja by Paulo Garcia (Mar 6, 2016)[http://csdb.dk/release/?id=145094 Boulder Dashes ReM (2016)] {{webarchive|url=https://web.archive.org/web/20160721125956/http://csdb.dk/release/?id=145094 |date=2016-07-21 }} on csdb.dk (2016) The group reverse engineered several more games also from this period, like The Castles of Dr. Creep 3, Miner 2049er, Lode Runner, Manic Miner and Beach Head.[http://csdb.dk/group/?id=6416 Reengine & Mod (ReM)] {{webarchive|url=https://web.archive.org/web/20160721130246/http://csdb.dk/group/?id=6416 |date=2016-07-21 }} on csdb.dk

The Castles of Dr. Creep

|1984 (C64)

|2010

|Platform game

|Edward R. Hobbs

|Robert Crossfield worked on a faithful engine for the game since 2010.[https://github.com/segrax/DrCreep DrCreep] {{webarchive|url=https://web.archive.org/web/20160224022043/https://github.com/segrax/DrCreep |date=2016-02-24 }} on github.com The remake/reconstructed version got released for PC on Steam by Edward R. Hobbs & Robert Crossfield in September 2016.

Cannon Fodder

|1993 (DOS)

|2015

|top-down shooter

|Sensible Software

|In December 2015, Robert Crossfield released version 1.0 of the reverse engineered DOS CD Cannon Fodder version, under the name "OpenFodder" on GitHub under GPL.[https://www.indieretronews.com/2015/12/openfodder-open-sourced-cannon-fodder.html OpenFodder – Open sourced Cannon Fodder gets a big 1.0 release!] on indieretronews.com[https://github.com/segrax/openfodder/releases Releases] {{webarchive|url=https://web.archive.org/web/20160721125956/https://github.com/segrax/openfodder/releases |date=2016-07-21 }} on github.com

Chasm: The Rift

|1997 (DOS)

|2016

|First-person shooter

|Action Forms

|Around 2016 a reverse engineered version became available on GitHub.[https://github.com/Panzerschrek/Chasm-Reverse Chasem reverse] on github.com

Citadel

|1985 (BBC)

|2018

|Action-adventure game

|Superior Software

|Buildable, reverse-engineered assembler source for the BBC Microcomputer Model B version of the game was released on the Stardot forums in October 2018, by a user known as Diminished.{{cite web |title=Citadel |url=https://stardot.org.uk/forums/viewtopic.php?f=1&t=15819 |website=stardot.org.uk |access-date=1 March 2019}}

Commander Keen 4-6

|1991 (DOS)

|2021

|Sidecrolling shooter

|id Software

|Between 2019 and 2021 K1n9_Duk3 recreated the source code of Commander Keen 4, 5 and 6, based on the already released source code of Catacomb 3-D, Wolfenstein 3-D and Keen Dreams. When compiled with the Borland C++ v3.0 compiler, compressing the newly created executables with LZEXE 100% identical copies of the original v1.4 executables are achievable.

Before that, in 2017 a pixel-accuracy aiming engine re-implementation, based on several disassembly/decompilation efforts, became available by David Gow.[https://davidgow.net/keen/omnispeak.html Omnispeak — A Commander Keen Reimplementation] {{webarchive|url=https://web.archive.org/web/20170315144012/https://davidgow.net/keen/omnispeak.html |date=2017-03-15 }} on davidgow.net C99 source code is hosted on GitHub under GPLv2. Originally only meant for Keen 5, it now supports Keen 4, 5 and 6.[https://github.com/sulix/omnispeak omnispeak] {{webarchive|url=https://web.archive.org/web/20170223234521/https://github.com/sulix/omnispeak |date=2017-02-23 }} on GitHub

Diablo

|1996 (Windows)

|2018

|Action RPG

|Blizzard Entertainment

|In 2018 a reverse engineered version was released, based on previously accidentally released debug information and builds by Diablo developers.{{cite web|url=https://github.com/diasurgical/devilution#introduction |date=2015-12-08 |title=devilution|website=GitHub }} on GitHub (June 2018) Builds and compiles successfully for modern OSes.

Diablo II

|2000 (Windows)

|2015

|Action RPG

|Blizzard Entertainment

|In 2015, an unofficial port for the ARM architecture based Pandora handheld became available by static recompilation and reverse engineering of the original x86 version.[http://pandoralive.info/?p=5338 Diablo II Running on Open Pandora!] {{webarchive|url=https://web.archive.org/web/20151208101108/http://pandoralive.info/?p=5338 |date=2015-12-08 }} on PandoraLive (22 November 2015){{cite web|url=http://repo.openpandora.org/?page=detail&app=package.diablo2 |title=Diablo II |author=notaz |date=2015-11-22 |access-date=2015-12-04 |publisher=openpandora.org |quote=This is statically recompiled Windows executable, that was recompiled to ARM and bundled with ARM version of wine. |url-status=live |archive-url=https://web.archive.org/web/20151220054410/https://repo.openpandora.org/?page=detail&app=package.diablo2 |archive-date=2015-12-20 }}

Digger

|1983

|1998

|Arcade

|Windmill Software

|Reverse engineered by Andrew Jenner in 1998, called Digger Remastered, released as GPL and ported for many platforms.[http://www.digger.org/download.html download] {{webarchive|url=https://web.archive.org/web/20111017025847/http://www.digger.org/download.html |date=2011-10-17 }} on digger.org

Driver 2

|2000 (PS)

|2020

|Driving

|Reflections Interactive

|In 2020 a reverse engineered version was released, based on previously accidentally released debug symbols.{{cite web |last1=Macgregor |first1=Jody |title=Driver 2 has an unofficial PC port |url=https://www.pcgamer.com/driver-2-has-an-unofficial-pc-port/ |magazine=PC Gamer |publisher=Future plc |access-date=19 November 2020 |archive-url=https://web.archive.org/web/20201115224838/https://www.pcgamer.com/driver-2-has-an-unofficial-pc-port/ |archive-date=15 November 2020 |date=15 November 2020 |url-status=live}}

Duke Nukem II

|1993 (DOS)

|2022

|Platform game

|Apogee Software

|In 2022 [https://github.com/lethal-guitar/Duke2Reconstructed reconstructed C code] was released.

Dune II

|1992 (Windows)

|2009

|Real-time strategy game

|Westwood Studios

|In 2009 a group started reverse engineering Dune II under the name OpenDUNE.[https://github.com/OpenDUNE/OpenDUNE OpenDUNE] {{webarchive|url=https://web.archive.org/web/20160329091448/https://github.com/OpenDUNE/OpenDUNE |date=2016-03-29 }} on github.com The resulting code was released under GPLv2 and ported to other platforms like the Pandora.[http://repo.openpandora.org/?page=detail&app=dunedynasty_ptitseb dunedynasty] {{webarchive|url=https://web.archive.org/web/20160404074655/http://repo.openpandora.org/?page=detail&app=dunedynasty_ptitseb |date=2016-04-04 }} on repo.openpandora.org

Dungeon Keeper

|1997

|2005

|realtime dungeon simulator

|Bullfrog Productions

|Tomasz Lis reverse engineered a version called KeeperFX, the resulting source code is released as GPLv3.{{Cite web|url=https://lubiki.keeperklan.com/index.php|archive-url=https://web.archive.org/web/20150704175919/http://keeper.lubiki.pl/index.php|title=Home - DK Maps'n'Tools Base|archive-date=July 4, 2015|website=lubiki.keeperklan.com}} After developer Lis stopped working on KeeperFX around 2016 the community took up the work in 2019 and continues the project as KeeperFX Unofficial.[https://keeperklan.com/threads/7104-KeeperFX-Unofficial-0-4-7 KeeperFX Unofficial 0.4.7] on keeperklan.com (2019)

Dungeon Master

|1989

|2001

|Dungeon crawler

|FTL Games

|In 2001, Dungeon Master (and its successor CSB) was released by Paul R. Stevens in a portable reverse engineered version called CSBwin. CSBwin was reverse engineered from the game's Atari assembler code to a pure C version in months of work.[http://dmweb.free.fr/?q=node/851 Chaos Strikes Back for Windows (and Linux, MacOS X, Pocket PC)] {{webarchive|url=https://web.archive.org/web/20160121120612/http://dmweb.free.fr/?q=node%2F851 |date=2016-01-21 }} on Dungeon Master Encyclopedia (2005-10-24){{cite web|url=http://www.rockpapershotgun.com/2012/03/29/you-could-be-playing-dungeon-master-right-now/ |title=You Could Be Playing Dungeon Master Right Now |first=John |last=Walker |date=2012-03-29 |access-date=2015-08-03 |journal=Rock Paper Shotgun |quote=There is a version that just works, without an emulator, and it's free. [...] A madman by the name of Paul Stevens spent six months, eight hours a day, writing 120,000 lines of what he calls "pseudo-assembly language" to rebuild it in C++. And then released the game and source code for free. Can he do that? I've decided that yes, he can, which legitimises my promoting it to you. |url-status=live |archive-url=https://web.archive.org/web/20150729060951/http://www.rockpapershotgun.com/2012/03/29/you-could-be-playing-dungeon-master-right-now/ |archive-date=2015-07-29 }} In 2014 Christophe Fontanel released another reverse engineering project which tries to recreate all existing versions.[http://www.dungeon-master.com/forum/viewtopic.php?f=25&t=29805 Back to the source: ReDMCSB] {{webarchive|url=https://web.archive.org/web/20160425135612/http://www.dungeon-master.com/forum/viewtopic.php?f=25&t=29805 |date=2016-04-25 }} by Christophe Fontanel (18-Jan-2014)[https://www.quora.com/Is-it-possible-to-reverse-engineer-software-without-its-source-code Is it possible to reverse engineer software without its source code?] on quora.com by Doug Bell "lead developer of "Dungeon Master": Yes. Here's an example."

E.T. the Extra-Terrestrial

|1982 (Atari)

|2006

|Arcade

|Atari

|In 2006, decompiled by Dennis Debro.{{cite web|url=http://www.itworld.com/article/2698883/disaster-recovery/digging-up-e-t--s-source-code.html |title=Digging up E.T.'s source code |publisher=ITworld |date=2014-05-06 |first=Phil |last=Johnson |quote=The code, written in assembly language for the MOS Technology 6502 8-bit processor, has been around for a while, having been reconstructed by Dennis Debro in 2006. |url-status=live |archive-url=https://web.archive.org/web/20160407163205/http://www.itworld.com/article/2698883/disaster-recovery/digging-up-e-t--s-source-code.html |archive-date=2016-04-07 }}[http://pastebin.com/AaSYZTHt E.T. the Extra-Terrestrial(1982) Atari 2600 Source Code] {{webarchive|url=https://web.archive.org/web/20160325194124/http://pastebin.com/AaSYZTHt |date=2016-03-25 }} on pastebin.com Following that, several unofficial fixes for the game were released by a fan site.{{cite web |url=http://www.neocomputer.org/projects/et/ |title=Fixing E.T. The Extra-Terrestrial for the Atari 2600 |publisher=Neocomputer |access-date=6 April 2013 |archive-url=https://web.archive.org/web/20130408174949/http://www.neocomputer.org/projects/et/ |archive-date=8 April 2013 }}

Elite

|1984 (BBC Micro)

|2003

|Space trading game

|Ian Bell, David Braben

|Christian Pinder created Elite: The New Kind as faithful PC version by reverse-engineering platform-neutral C code from the original BBC Micro version of Elite. This version was withdrawn from the main distribution at David Braben's request in 2003.{{cite web | url=http://www.christianpinder.com/games/ | archive-url=https://web.archive.org/web/20080809170839/http://www.christianpinder.com/games/ | archive-date=2008-08-09 | title=NewKind | publisher=Christian Pinder | access-date=2008-08-09}} In September 2014, on Elite's 30th birthday, Ian Bell blessed Elite: The New Kind and re-released it for free on his website.{{cite web | title=Bell and Braben See Eye-to-eye as Original Elite Sees Dual Re-release | date = 25 September 2014 | publisher=cabume.co.uk | url=http://www.cabume.co.uk/software/bell-and-braben-see-eye-to-eye-as-classic-eighties-video-game-elite-sees-dual-re-release.html| archive-url=https://web.archive.org/web/20150413091114/http://www.cabume.co.uk/software/bell-and-braben-see-eye-to-eye-as-classic-eighties-video-game-elite-sees-dual-re-release.html |archive-date=2015-04-13}}{{cite web|url=https://www.vg247.com/2014/09/17/classic-elite-free-pc-download/ |title=Classic space sim Elite goes free this weekend |first=Matt |last=Martin |date=2014-09-17 |access-date=2015-11-06 |quote="A superior remake of the original space trading game Elite will be released for free this weekend, 30 years after the original game launched" |publisher=vg247 |url-status=live |archive-url=https://web.archive.org/web/20151017081457/http://www.vg247.com/2014/09/17/classic-elite-free-pc-download/ |archive-date=2015-10-17 }}{{cite web|url=http://www.elitehomepage.org/thirty/index.htm |title=Elite 30th Anniversary |quote="Today, 20th September 2014 is the 30th anniversary of the day the world first experienced Elite, the 3D space trading and combat game written by Ian Bell and David Braben in conjunction with Acornsoft. From that beginning on the BBC Micro and Acorn Electron, the game went on to be released for most home computers of the time. Celebrate by playing Elite again, for free. Thanks to Matt Goldbolt, the original BBC Micro version now runs direct in the Google Chrome browser if you click here. Or for Windows PCs, download Christian Pinder's Elite: The New Kind by clicking here." |publisher=elitehomepage.org |first=Ian |last=Bell |date=2014-09-20 |archive-url=https://web.archive.org/web/20150902054507/http://www.elitehomepage.org/thirty/index.htm |archive-date=September 2, 2015 }} Source code of the 1.0 version is available on a GitHub repository.[https://github.com/fesh0r/newkind newkind] {{webarchive|url=https://web.archive.org/web/20151212235413/https://github.com/fesh0r/newkind |date=2015-12-12 }} on GitHub.

Escape from Colditz

|1991 (Amiga)

|2009

|Action-adventure game

|Mike Halsall, John Law / Digital Magic Software.

|Around 2009 some developers reconstructed from the Amiga version a C version under GPLv3.{{cite web|url=https://sites.google.com/site/colditzescape/ |title=colditz escape! |access-date=2016-01-14 |year=2010 |url-status=live |archive-url=https://web.archive.org/web/20160310000628/https://sites.google.com/site/colditzescape/ |archive-date=2016-03-10 }}[https://github.com/aperture-software/colditz-escape colditz-escape] {{webarchive|url=https://web.archive.org/web/20160721130827/https://github.com/aperture-software/colditz-escape |date=2016-07-21 }} on github.com Ported then to many systems.

Exile

|1988 (BBC Micro)

|2012

|Action-adventure game

|Peter Irvin, Jeremy Smith

|Around 2012 the assembly source code of the BBC Micro version was reconstructed and commented.{{cite web|url=http://www.level7.org.uk/miscellany/exile-disassembly.txt |title=Exile disassembly |quote="Published by Superior Software in 1988, Exile is widely regarded as the most technically advanced game released for the BBC Micro. Featuring an enormous procedurally generated landscape, a complete physics engine and a host of game elements to interact with, it remains unsurpassed in pushing the capabilities of the system to their limits." |access-date=2013-01-14 |publisher=level7.org.uk |year=2012 |url-status=live |archive-url=https://web.archive.org/web/20130413042844/http://www.level7.org.uk/miscellany/exile-disassembly.txt |archive-date=2013-04-13 }} Later author Peter Irvin blessed also the non-commercial redistribution of the Amiga version of the game.[http://thunderpeel2001.com/exile/ Exile] {{webarchive|url=https://web.archive.org/web/20160507211615/http://thunderpeel2001.com/exile/ |date=2016-05-07 }} on thunderpeel2001.com/exile "Email from Peter Irvin (creator of Exile): Yes I've recently decided to allow old versions of Exile to be downloaded for emulation under certain conditions: [...]"

Freeway

|1981 (Atari)

|19??

|Arcade game

|Activision

|Decompiled and commented by Rebecca Heineman.[https://www.bjars.com/disassemblies.html Original Game Disassemblies] {{webarchive|url=https://web.archive.org/web/20161217081517/http://www.bjars.com/disassemblies.html |date=2016-12-17 }} on bjars.com

Football Manager

|1982

|2001

|Sports game, Business simulation game

|Kevin Toms

|In 2001 Paul Robson developed an accurate remake of the original game by reverse engineering in C.[https://www.robsons.org.uk/archive/www.autismuk.freeserve.co.uk/index.htm Paul Robson's SDL Games] {{webarchive|url=https://web.archive.org/web/20160623053457/http://www.robsons.org.uk/archive/www.autismuk.freeserve.co.uk/index.htm |date=2016-06-23 }} "Football Manager - A remake of the (in)famous Sinclair Spectrum Football Manager game, complete with stick-man graphics. This is reverse engineered, so it should play identically. Finished. fm-0.99.tar.gz" (May 2004) The remake has since been ported to the GP2X[https://web.archive.org/web/20071011181616/http://archive.gp2x.de/cgi-bin/cfiles.cgi?0%2C0%2C0%2C0%2C36%2C1856 GP2X version] at GP2X Archive (archived) and Google Android.

Frontier: Elite 2

|1993

|2006

|Space trading game

|Frontier Developments

|Reverse engineered to C by Tom Morton until 2006.[http://tom.noflag.org.uk/glfrontier.html GLFrontier Project Page!!!1] {{webarchive|url=https://web.archive.org/web/20151110120955/http://tom.noflag.org.uk/glfrontier.html |date=2015-11-10 }} on noflag.org.uk "This WAS the Atari ST version of the game Frontier: Elite 2 by the great man mentioned previously. It was disassembled, OS calls and hardware access removed, and originally run on a stripped down ST emulator (Hatari). Now it is compiled to C or native x86, and run much faster without 68K emulation. Most recently it has been modified to draw stuff with OpenGL at any shiny resolution with 8xAA, etc. A dandy evolution for a crappy old Atari ST game."

Frontier: First Encounters (Elite III)

|1995

|2005

|Space trading game

|Frontier Developments

|Frontier Developments announced in 2000 that FFE would be open-sourced under a GPL-similar license,[https://web.archive.org/web/20030621085848/http://www.eliteclub.co.uk/ecnews.html News] on eliteclub.co.uk "8th November 2000 - Following much discussion on the subject of open-source by the Elite community, we have decided to make some alterations to our previous plans for the Elite Club - we are going to relax some of the restrictions we were intending to put on the distribution of the source code. The source code will now be distributable more freely, under a licence agreement similar to the GPL (GNU Public Licence)." but this never happened.[http://westpdmkids.tripod.com/west-pdm-kids02/e_index.htm Welcome Commander, to the AmigaFFE Project] {{webarchive|url=https://web.archive.org/web/20160305082248/http://westpdmkids.tripod.com/west-pdm-kids02/e_index.htm |date=2016-03-05 }} "after I have seen the announcement of a release of the Sources of Frontier Elite II and Frontier First Encounters on the Eliteclub I was very happy with it. Now it is 2001 (around 2 years since the announcement) and they still haven't released it" In response, in October 2005 the game was reverse engineered by John Jordan and builds for modern operation systems were provided.{{cite web|url=http://jaj22.org.uk/jjffe/|archive-date=2011-03-03 |archive-url=https://web.archive.org/web/20110303051207/http://jaj22.org.uk/jjffe/ |title=JJFFE Central |publisher=jaj22.org.uk |date=2009-12-01 |first=John |last=Jordan|access-date=2015-11-06| quote=What is JJFFE? JJFFE is set of recompiled replacement executables for the 1995 Frontier Developments game Frontier: First Encounters. There are currently versions that run under Windows 95/98/ME, Windows 2000, Windows XP, Windows NT4, OS/2, Linux and Mac. As well as running on many more operating systems than the original, JJFFE also includes minor improvements and bugfixes.}} Updated until December 1, 2009, and later continued by other programmers with builds like "FFE_D3D".[http://wiki.alioth.net/index.php/FFE_D3D FFE_D3D] {{webarchive|url=https://web.archive.org/web/20140716102326/http://wiki.alioth.net/index.php/FFE_D3D |date=2014-07-16 }} on alioth.net

Final Fantasy VIII

|1999

|2019

|Role-Playing

|Square Enix

|In 2019, Marcin Gomulak rewrote the engine from scratch in C#.

Grand Theft Auto III

|2001 (Windows)

|2020

|Action-adventure

|DMA Design

|Reverse engineered C++ source code, with support for multiple platforms based on GLFW, including the Nintendo Switch.{{Cite web|url=https://comicbook.com/gaming/news/gta-3-grand-theft-auto-nintendo-switch-lite-game/|title=GTA 3 Ported to Nintendo Switch, But Not by Rockstar Games|website=GAMING|date=25 September 2020 }} Source code available at GitHub.[https://web.archive.org/web/20210218020404/https://github.com/GTAmodding/re3 re3] on github.com It was hit with a DMCA takedown on 20 February 2021.{{Cite web|url=https://www.eurogamer.net/articles/2021-02-20-gta-3-and-vice-city-reverse-engineering-fan-project-hit-with-dmca-takedown|title=GTA 3 and Vice City reverse-engineering fan project hit with DMCA takedown|first=Wesley|last=Yin-Poole|website=Eurogamer|date=20 February 2021}}

Grand Theft Auto: Vice City

|2002

|2020

|Action-adventure

|Rockstar North

|Reverse engineering started in early May 2020 and finished in December, being based on the decompiled Grand Theft Auto III code.{{Cite web|url=https://www.gamingonlinux.com/2021/02/gta-iii-and-vice-city-get-reverse-engineered-with-a-new-game-engine|title=GTA III and Vice City get reverse engineered with a new game engine|website=GamingOnLinux|date=17 February 2021 }}{{Cite web|url=https://www.eurogamer.net/articles/2021-02-17-how-a-small-group-of-gta-fanatics-reverse-engineered-gta-3-and-vice-city-without-so-far-getting-shut-down-by-take-two|title=How a small group of GTA fanatics reverse-engineered GTA 3 and Vice City without (so far) getting shut down|first=Wesley|last=Yin-Poole|website=Eurogamer|date=17 February 2021}} It was hit with a DMCA takedown on February 20.

Half-Life

|1999 (Windows)

|2013

|FPS

|Valve

|Since 2002 Valve has released the source code of the game client and the game (server) in its SDK for modder use.[https://github.com/ValveSoftware/halflife halflife] {{webarchive|url=https://web.archive.org/web/20170627161239/https://github.com/ValveSoftware/halflife |date=2017-06-27 }} on github.com/ValveSoftware The Goldsrc engine and its other components were reverse engineered in context of the Xash3d project.[http://www.indiedb.com/engines/xash3d-engine xash3d-engine] {{webarchive|url=https://web.archive.org/web/20161220175527/http://www.indiedb.com/engines/xash3d-engine |date=2016-12-20 }} on indiedb.com Ports to other systems became available, for instance Android or the OpenPandora.[https://github.com/ptitSeb/halflife halflife] on github.com/ptitSeb

Inner Worlds

|1996 (DOS)

|2016

|Fantasy adventure platformer

|Sleepless Software

|Originally shareware, in February 2000 the game was released as freeware in version 1.3.[https://web.archive.org/web/20000229040943/http://sleepless.com/iw/download.html download] on internet archive (February 2000)[https://sleepless.com/iw/download.html download] on sleepless software Source code reverse engineered around 2016.[https://github.com/TambourineReindeer/open-iw open-iw] on github.com

Igor: Objective Uikokahonia

|1994 (DOS)

|2017

|Point and click adventure

|Pendulo Studios

|Reverse engineered by Gregory Montoir, now hosted on GitHub, currently beta status.[https://github.com/cyxx/igor igor] on github.com

Heart of the Alien

|1994 (Sega CD)

|2004

|Platformer

|Interplay Entertainment

|After Heart of the Alien became unsupported and unavailable, Gil Megidish took up 2004 the effort of extracting a source code variant from the binary game by reverse engineering to make the game available again on modern platforms.[http://hota.sourceforge.net Heart of the Alien Redux] {{webarchive|url=https://web.archive.org/web/20161025161706/http://hota.sourceforge.net/ |date=2016-10-25 }} on sourceforge.net The extracted source code was made open-source and is hosted freely available on SourceForge.

Jak and Daxter: The Precursor Legacy

|2001 (PlayStation 2)

| 2022

|Platformer

|Naughty Dog

|Naughty Dog coded the first three Jak and Daxter games in GOAL, a modified version of Lisp. A group of programmers created a program that could read and decompile GOAL code, which allowed them to reconstruct the game's source code. While all three Jak games are currently planned, the first has the most work done on it - including a port to modern PCs.[https://github.com/open-goal/jak-project The Jak Project] on github.com

Jet Set Willy

|1984 (ZX)

| 2014

|Platformer

|Software Projects

|This classic ZX Spectrum game was disassembled by Richard Dymond back into Z80 source code, and includes some very comprehensive comments.[https://github.com/skoolkid/jetsetwilly Jet Set Willy] on github.com

J.R.R. Tolkien's The Lord of the Rings, Vol. I

|1990 (DOS)

|2009

|Adventure game

|Interplay Entertainment

|As the game is without official support for many years, a community developer reverse engineered the game engine and created around 2009 a substitute. The LPGLv2.1+ licensed open-source project allowed the porting to modern platforms,[http://www.wonderland.cz/lotr/ lotr] {{webarchive|url=https://web.archive.org/web/20140201163901/http://www.wonderland.cz/lotr/ |date=2014-02-01 }} by Michal Beneš on wonderland.cz for instance Windows, Linux and the OpenPandora handheld.[https://pyra-handheld.com/boards/threads/lord-of-the-rings.80589/ Lord of the Rings] on pyra-handheld.com (2017)

Kid Chameleon

|1992 (Genesis)

|?

|Platformer

|Sega Technical Institute

|Reverse engineered assembly of the Sega Genesis game by Sonic fan site Sonic Retro, hosted on GitHub.[https://github.com/sonicretro/kid-chameleon-disasm Kid Chameleon] on GitHub

KKnD Extreme

|1997 (Windows)

|2017

|Real-time strategy

|Beam Software

|Reverse engineered and made available on GitHub by Alexandr Parshin.[https://github.com/gp-alex/OpenKKND OpenKKND] on GitHub

Little Big Adventure

|1994 (Windows)

|2021

|Action-adventure

|Adeline Software International

|Source code has been published on GitHub in 2021 [https://github.com/2point21/lba1-classic lba1-classic]GitHub.

Lego Island

|1997 (Windows)

|2024

|Action-adventure

|Mindscape

|In June 2023, a group of GitHub users started decompiling the game, with the decompilation being functionally complete in late 2024.{{Citation |title=isledecomp/isle |date=2025-01-25 |url=https://github.com/isledecomp/isle |access-date=2025-01-25 |publisher=isledecomp}}

Manic Miner

|1983 (ZX)

| 2014

|Platformer

|Bug-Byte

|This classic ZX Spectrum game was disassembled by Richard Dymond back into Z80 source code, and includes some very comprehensive comments.[https://github.com/skoolkid/manicminer Manic Miner] on github.com

Mercenary, including Damocles and The Dion Crisis

|1985

|2002 (several years prior; Mercenary){{Cite web |date=2002-04-09 |title=The Mercenary Site (MDDClone Section) |url=http://www.geocities.com:80/Paris/7150/merce.htm |archive-url=https://web.archive.org/web/20020409092646/http://www.geocities.com/Paris/7150/merce.htm |archive-date=2002-04-09 |access-date=2022-06-14 |quote=I decided, with MDDClone author, to distribute it after several years (...) |url-status=live }}

|Adventure game

|Novagen Software

|A computer scientist fan reverse engineered all of the game engines and created a clone of the complete game series.[http://mercenarysite.free.fr/mddclone.htm MDDClone] (2007) Source for MDDClone isn't publicly available.

Metroid

|1986 (NES)

|?

|Metroidvania

|Nintendo R&D1, Intelligent Systems

|The NES game was disassembled by the collaborative work of several developers over the course of years and modified to run on the more powerful MMC3 chip.[https://github.com/ZaneDubya/MetroidMMC3 MetroidMMC3] {{webarchive|url=https://web.archive.org/web/20160721130734/https://github.com/ZaneDubya/MetroidMMC3 |date=2016-07-21 }} on github.com{{usurped|1=[https://web.archive.org/web/20160104232748/http://www.metroid-database.com/m1/sourcecode.php Metroid Source Code]}} on metroid-database.com

Might and Magic 6/7/8

|1998 (Windows)

|2016

|RPG

|New World Computing

|Reverse engineered as world-of-might-and-magic on GitHub by Alexandr Parshin and other programmers.[https://github.com/pskelton/world-of-might-and-magic world-of-might-and-magic] on GitHub

Minecraft

|2009 (Windows)

|2010

|Sandbox game

|Mojang

|The Mod Coder Pack (MCP)[http://www.modcoderpack.com/website/ The Mod Coder Pack] {{webarchive|url=https://web.archive.org/web/20160830212803/http://www.modcoderpack.com/website/ |date=2016-08-30 }} on modcoderpack.com offered scripts for de-obfuscation/decompilation of the Java-based version of Minecraft starting in 2010. The Mod Coder Pack was discontinued after Mojang began releasing deobfuscation mappings with each update in 2019.{{cite tweet|number=1169257039597645824|user=Dinnerbone|title=I've been pushing for this for a while, so I'm really happy that we were finally able to release the obfuscation mappings public. @SeargeDP had a great idea to release the 1.14.4 mappings as comparison, so those are going out right now.|author=Nathan Adams|author-link=Nathan Adams (programmer)|date=4 September 2019|access-date=11 May 2021}}

Nicky Boum

|1992

|2007

|Platform game

|Microïds

|Reverse-engineered by Gregory Montoir and open-sourced in March 2006 with version 0.1.5. The engine reached with v0.2.0 playable status when development and distribution of the source code was stopped.[https://web.archive.org/web/20071226123937/http://cyxdown.free.fr/nicky/ nicky] on cyxdown.free.fr (December 26, 2007) The source code was made in 2017 available on GitHub for some time, before the repository was set to private.[https://github.com/cyxx/nicky nicky] on github.com/cyxx

Oo-Topos

|1982 (Apple II)

|2015

|Interactive fiction

|Penguin Software

|Penguin Software released several of their Comprehend Adventure engine games as freeware, also from the Transylvania series.[http://graphicsmagician.com/polarware/comprehend.htm The Comprehend Adventures] {{webarchive|url=https://web.archive.org/web/20160726134223/http://graphicsmagician.com/polarware/comprehend.htm |date=2016-07-26 }} on graphicsmagician.com After end of official support, Ryan Mallon reconstructed around July 2015 a source code variant of the game's engine to port these games.[https://github.com/RyanMallon/recomprehend recomprehend] by Ryan Mallon on github.com Ryan Mallon works also on reverse engineering The Lost Vikings engine.{{Cite web|url=https://github.com/RyanMallon/TheLostVikingsTools|title=RyanMallon/TheLostVikingsTools|date=March 2, 2021|via=GitHub}}

Out Run

|1986 (Arcade)

|2012

|Arcade racing

|Sega

|Since around 2009[http://reassembler.blogspot.com.cy/2009/08/outrun-decompilation-project.html outrun-decompilation-project] {{webarchive|url=https://web.archive.org/web/20161221021205/http://reassembler.blogspot.com.cy/2009/08/outrun-decompilation-project.html |date=2016-12-21 }} (2009-08-01) a game enthusiast worked on decompiling source code of Out Run. In 2012 a truthful engine, called "Canon Ball", was released on GitHub. To run the game, the original game's assets are required.[https://github.com/djyt/cannonball/wiki/Cannonball-Manual Cannonball-manual] {{webarchive|url=https://web.archive.org/web/20140906150223/https://github.com/djyt/cannonball/wiki/Cannonball-Manual |date=2014-09-06 }} on github.com Ports to many systems followed, like OpenPandora.[https://repo.openpandora.org/?page=detail&app=cannonball_ptitseb cannonball_ptitseb] {{webarchive|url=https://web.archive.org/web/20161220152429/https://repo.openpandora.org/?page=detail&app=cannonball_ptitseb |date=2016-12-20 }} on repo.openpandora.org

Paper Mario

|2000 (N64)

|2023

|Role-playing video game

|Intelligent Systems

|Decompiled in 2023 with code released on github.com[https://github.com/pmret/papermario Paper Mario] on github.com

Perfect Dark

|2000 (Nintendo 64)

|2022

|First Person Shooter

|Rare

|Decompiled in 2022 with code released on github.com.[https://gitlab.com/ryandwyer/perfect-dark Perfect Dark] on github.com

Plants vs. Zombies

|2011 (Windows Phone)

|2021

|Tower Defense

|Popcap

|Decompiled in 2021 with code released on github.com.[https://github.com/Mewnojs/PlantsVsZombies.NET PlantsVsZombies.NET] on github.com

Pokémon Red and Pokémon Blue

|1996 (GBC)

|2014

|Role-playing video games

|Game Freak

|Reverse engineered assembly of the Game Boy Color game on github.com.[https://github.com/pret/pokered pokered] {{webarchive|url=https://web.archive.org/web/20160721130052/https://github.com/pret/pokered |date=2016-07-21 }} on github.com

Pokémon Yellow

|1998 (GBC)

|2014

|Role-playing video games

|Game Freak

|Reverse engineered assembly of the Game Boy Color game on github.com.[https://github.com/pret/pokeyellow pokeyellow] {{webarchive|url=https://web.archive.org/web/20170320221844/https://github.com/pret/pokeyellow |date=2017-03-20 }} on github.com

Pokémon Gold and Pokémon Silver

|1999 (GBC)

|2015

|Role-playing video games

|Game Freak

|Reverse engineered assembly of the Game Boy Color game on github.com.[https://github.com/pret/pokegold pokegold] {{webarchive|url=https://web.archive.org/web/20180203160250/https://github.com/pret/pokegold |date=2018-02-03 }} on github.com

Pokémon Crystal

|2000 (GBC)

|2014

|Role-playing video games

|Game Freak

|Reverse engineered assembly of the Game Boy Color game on github.com.[https://github.com/pret/pokecrystal pokecrystal] {{webarchive|url=https://web.archive.org/web/20160721130447/https://github.com/pret/pokecrystal |date=2016-07-21 }} on github.com

Pong

|1972

|2012

|Arcade game

|Atari

|The available schematics ("source code") was reconstructed and adapted for modern and available electronic parts to a new PCB design in 2012.[http://hackaday.com/2012/12/22/fabricating-hardware-from-the-original-arcade-pong-schematics/ fabricating-hardware-from-the-original-arcade-pong-schematics] {{webarchive|url=https://web.archive.org/web/20160513092118/http://hackaday.com/2012/12/22/fabricating-hardware-from-the-original-arcade-pong-schematics/ |date=2016-05-13 }} on hackaday.com[http://atarihq.com/danb/Pong.shtml Pong] {{webarchive|url=https://web.archive.org/web/20160529200658/http://www.atarihq.com/danb/Pong.shtml |date=2016-05-29 }} on atarihq.com{{Cite web|url=https://imgur.com/a/TUGto|archive-url=https://web.archive.org/web/20160610154229/http://imgur.com/a/TUGto/layout/blog|title=Pong Reborn|archive-date=June 10, 2016|website=Imgur}}

rowspan="2" | PowerSlave

| rowspan="2" |1996

|2015 (console version)

| rowspan="2" | FPS

| rowspan="2" | Lobotomy Software

|On May 24, 2015, an unofficial remake based on the PlayStation version was released by Samuel "Kaiser" Villarreal for free.[https://powerslaveex.wordpress.com/2015/05/24/powerslave-ex-public-beta-released/ Powerslave EX released] {{webarchive|url=https://web.archive.org/web/20160304031641/https://powerslaveex.wordpress.com/2015/05/24/powerslave-ex-public-beta-released/ |date=2016-03-04 }}, powerslaveex.wordpress.com. In May 2015 publisher Night Dive Studios acquired the game rights,{{cite web|url=http://techraptor.net/content/interview-man-rebuilding-powerslave |title=An Interview With the Man Rebuilding Powerslave |last=Ruhland |first=Perry |date=May 4, 2015 |website=TechRaptor |access-date=November 18, 2015 |url-status=live |archive-url=https://web.archive.org/web/20151119110514/http://techraptor.net/content/interview-man-rebuilding-powerslave |archive-date=November 19, 2015 }} Villarreal and Night Dive Studios working on a digital distribution re-release.[http://www.videogamer.com/news/turok_the_dinosaur_hunter_pc_remake_to_resume_development_this_year.html Turok: The Dinosaur Hunter PC remake to resume development this year] {{webarchive|url=https://web.archive.org/web/20160710024641/http://www.videogamer.com/news/turok_the_dinosaur_hunter_pc_remake_to_resume_development_this_year.html |date=2016-07-10 }} on VideoGamer.com by James Orry "The news comes from PC dev Samuel "Kaiser" Villarreal, who leaked the news speaking to Tech Raptor. Kaiser is currently remaking '96 shooter PowerSlave, and was asked about giving the same treatment to Turok." (8th May, 2015) On January 2, 2017, Kaiser released the source code of his reverse engineered engine under the GPLv3 license on GitHub.[https://twitter.com/SVKaiser/status/816019151940702214 Source code to my hobby project, PowerslaveEX, has been made public!] by SVKaiser on twitter.com[https://github.com/svkaiser/PowerslaveEX PowerslaveEX] {{webarchive|url=https://web.archive.org/web/20170524233930/https://github.com/svkaiser/PowerslaveEX |date=2017-05-24 }} on github.com

2019 (PC version)

|In November 2019 a reverse engineered port of the DOS version of Powerslave was released.{{Cite web|url=https://twitter.com/sirlemonhead/status/1197623668051976209|title=x.com}} The source code was released under the GPLv2 license.[https://github.com/nukeykt/NBlood/tree/master/source/exhumed Source code] on github.com

RollerCoaster Tycoon 2

|2002 (Windows)

|2014

|Business simulation game

|Chris Sawyer

|In April 2014, a project to reverse engineer Roller Coaster Tycoon 2 into platform independent C source code, was started under the name OpenRCT2 by Ted 'IntelOrca' John.{{cite web|url=http://www.indieretronews.com/2015/09/openrct2-project-open-source-adaption.html |title=OpenRCT2 project – Open-Source adaption of RollerCoaster Tycoon 2, gets a beta release |date=2015-09-08 |quote=I'm sure many of you remember the awesome game that is RollerCoaster Tycoon 2; a game by Chris Sawyer and published by Infograms in which you manage your very own theme park, with all its rides, shops, guests and economic fortune. Well that same game is now being given a much needed adjustment with the latest release of OpenRCT2 Project. An open source development which improves the game even further with new features, original bug fixes, raised game limits and much more! [...] Development started on April 2nd 2014 by Ted 'IntelOrca' John and thanks to numerous contributions from others |access-date=2015-11-15 |publisher=indieretronews.com}} Hosted as GPLv3 licensed open-source software on GitHub, it requires the original game's graphics and sound assets.{{cite web|url=https://github.com/OpenRCT2/OpenRCT2 |title=OpenRCT2 |access-date=2015-11-15 |publisher=GitHub |url-status=live |archive-url=https://web.archive.org/web/20151016061009/https://github.com/OpenRCT2/OpenRCT2 |archive-date=2015-10-16 }}

Sid Meier's Civilization

|1991 (MS-DOS)

|2023 (still ongoing)

|Turn-based strategy, 4X

|Microprose

|In year 2023 the work started on [https://github.com/rajko-horvat/OpenCiv1/ OpenCiv1 project] to faithfully rewrite the game source code in platform independent C# language. The source code is hosted on GitHub as Open-source software under MIT license.

Silent Hill 3

|2003

|2018

|Survival horror

|Konami

|In 2018, Palm Studios published a remake of the engine, written in C++ and using OpenGL.

Skifree

|1991 (Windows)

|2022

|Arcade

|Microsoft

|In 2022 [https://github.com/yuv422/skifree_decomp reconstructed C code] was released.

Snipes

|1983 (DOS)

|2016

|early networked Multi player game maze game

|SuperSet Software

|In July 2016, a faithful port by reverse engineering the original game became available. Permission was granted by original authors Drew Major and Kyle Powell{{cite web|url=https://www.vogons.org/viewtopic.php?f=7&t=49073 |title=VOGONS • View topic - Snipes ported to C/C++ with 100% logic compatibility and replay recording |website=www.vogons.org |access-date=2016-08-25 |url-status=live |archive-url=https://web.archive.org/web/20160827060719/https://www.vogons.org/viewtopic.php?f=7&t=49073 |archive-date=2016-08-27 }} to make it public. The full C/C++ source code is available at GitHub.[https://github.com/Davidebyzero/Snipes Snipes] on github.com

Sonic & Knuckles

|1994 (Genesis)

|?

|Platform

|Sega, Sonic Team

| Reverse engineered assembly of the Sega Genesis game by Sonic fan site Sonic Retro, hosted on GitHub.[https://github.com/sonicretro/skdisasm Sonic and Knuckles Disassembly] on GitHub Also includes a reverse engineered assembly of Sonic the Hedgehog 3.

Sonic Mania

|2017 (Windows)

|2022

|Platform

|Christian Whitehead, PagodaWest Games, Headcannon, Hyperkinetic Studios (Plus)

|In August 2022, the base game and the 2018 Plus DLC were decompiled, with the code released on GitHub.[https://github.com/Rubberduckycooly/Sonic-Mania-Decompilation Sonic Mania Decompilation] {{webarchive|url=https://web.archive.org/web/20220816204951/https://github.com/Rubberduckycooly/Sonic-Mania-Decompilation |date=2022-08-16 }} on GitHub

rowspan="2" |Sonic the Hedgehog

|1991 (Genesis)

|?

| rowspan="2" |Platform

|Sega, Sonic Team

|Reverse engineered assembly of the Sega Genesis game by Sonic fan site Sonic Retro, hosted on GitHub.[https://github.com/sonicretro/s1disasm Sonic 1 Disassembly] on GitHub

2013 (Windows)

|2021 (Windows)

|Christian Whitehead, Simon Thomley

|In January 2021, the games' 2013 remaster was decompiled, with the code released on GitHub.[https://github.com/Rubberduckycooly/Sonic-1-2-2013-Decompilation Sonic 1/2 2013 Decompilation] {{webarchive|url=https://web.archive.org/web/20210118045401/https://github.com/Rubberduckycooly/Sonic-1-2-2013-Decompilation|date=2021-01-18}} on GitHub

rowspan="2" |Sonic the Hedgehog 2

|1992 (Genesis)

|?

| rowspan="2" |Platform

|Sega Technical Institute

|Reverse engineered assembly of the Sega Genesis game by Sonic fan site Sonic Retro, hosted on GitHub.[https://github.com/sonicretro/s2disasm Sonic 2 Disassembly] on GitHub

2013 (Windows)

|2021 (Windows)

|Christian Whitehead, Simon Thomley

|In January 2021, the games' 2013 remaster was decompiled, with the code released on GitHub.

Sonic the Hedgehog CD

|2011 (Windows)

|2021

|Platform

|Christian Whitehead, Simon Thomley

|In January 2021, the games' 2011 remaster was decompiled, with the code released on GitHub.[https://github.com/Rubberduckycooly/Sonic-CD-11-Decompilation Sonic CD 2011 Decompilation] {{webarchive|url=https://web.archive.org/web/20210102023945/https://github.com/Rubberduckycooly/Sonic-CD-11-Decompilation |date=2021-01-02 }} on GitHub

Space Ace

|1984 (Apple IIGS)

|2015

|Interactive movie

|Advanced Microcomputer Systems

|In July 2015 Rebecca Heineman released a reverse engineered Apple IIGS source code version on GitHub.[https://github.com/Olde-Skuul/spaceaceiigs spaceace iigs] {{webarchive|url=https://web.archive.org/web/20150810160238/https://github.com/Olde-Skuul/spaceaceiigs |date=2015-08-10 }} on GitHub.[http://www.whatisthe2gs.apple2.org.za/space-ace Space-Ace] {{webarchive|url=https://web.archive.org/web/20150725222202/http://www.whatisthe2gs.apple2.org.za/space-ace |date=2015-07-25 }} on whatisthe2gs.apple2.org.za

Space Invaders

|1978

|2019

|Arcade

|Taito

|In December 2019 a C translation by Jason McSweeney was released on GitHub.[https://github.com/loadzero/si78c loadzero/si78c] on github.com

Star Castle

|1980 (Atari 2600)

|2012

|Arcade

|Atari

|Former Atari engineer D. Scott Williamson re-created in three years work Star Castle faithfully for the Atari 2600. After a successful crowdfunding campaign on Kickstarter, he released everything for free on his website, including source code.[http://www.eurogamer.net/articles/2012-05-02-man-makes-star-castle-for-atari-2600-30-years-after-atari-said-it-couldnt-be-done man-makes-star-castle-for-atari-2600-30-years-after-atari-said-it-couldnt-be-done] {{webarchive|url=https://web.archive.org/web/20161220151853/http://www.eurogamer.net/articles/2012-05-02-man-makes-star-castle-for-atari-2600-30-years-after-atari-said-it-couldnt-be-done |date=2016-12-20 }} on eurogamer[http://starcastle2600.blogspot.com.cy/p/star-castle-2600-story.html star-castle-2600-story] {{webarchive|url=https://web.archive.org/web/20161221021625/http://starcastle2600.blogspot.com.cy/p/star-castle-2600-story.html |date=2016-12-21 }} on starcastle2600.blogspot.com[https://www.kickstarter.com/projects/698159145/atari-2600-star-castle atari-2600-star-castle] {{webarchive|url=https://web.archive.org/web/20170321180523/https://www.kickstarter.com/projects/698159145/atari-2600-star-castle |date=2017-03-21 }} on kickstarter.com (2012)

StarCraft

|1998 (Windows)

|2014

|Real-time strategy

|Blizzard Entertainment

|By static recompilation and reverse engineering of the original x86 binary to an intermediate C "pseudo-assembly" source code,[https://pyra-handheld.com/boards/threads/starcraft.73844/page-3#post-1292053 Release: StarCraft] {{webarchive|url=https://web.archive.org/web/20160128024157/https://pyra-handheld.com/boards/threads/starcraft.73844/page-3 |date=2016-01-28 }} on pyra-handheld.com "As you can see it doesn't look much different from x86 disassembly, the only difference is that you can compile it for other 32bit archs (there is no way it would work on 64bit.." an unofficial version for the Pandora handheld and the ARM architecture became available in 2014.{{cite web|url=http://www.golem.de/news/open-pandora-starcraft-fuer-arm-handheld-kompiliert-1403-105031.html |title=Starcraft für ARM-Handheld kompiliert |date=2014-03-10 |first=Peter |last=Steinlechner |access-date=2014-03-25 |language=German |publisher=golem.de |url-status=live |archive-url=https://web.archive.org/web/20140330171713/http://www.golem.de/news/open-pandora-starcraft-fuer-arm-handheld-kompiliert-1403-105031.html |archive-date=2014-03-30 }}{{cite web|url=http://repo.openpandora.org/?page=detail&app=package.starcraft |title=StarCraft |author=notaz |date=2014-03-04 |access-date=2014-03-26 |publisher=openpandora.org |url-status=live |archive-url=https://web.archive.org/web/20140330171901/http://repo.openpandora.org/?page=detail&app=package.starcraft |archive-date=2014-03-30 }}

Star Wars Episode I: Racer

|1999

|2017

|Arcade racing

|LucasArts

|Reverse engineering of the code since 2017.{{Cite web|url=https://openswe1r.github.io/|title=Under Construction|website=OpenSWE1R}} Currently only a small part of the source code is reverse engineered, it is partly emulation. The main functionality is still coming from the original binary where newly created replacement parts are spliced-in in runtime.

Star Wars Jedi Knight: Dark Forces II

|1997

|2013

|FPS

|LucasArts

|Since 2013, a recreation of the engine has been in development on GitHub.{{cite web|title=Early-development Jedi Knight: Dark Forces 2 game engine recreation|website=GitHub|date=23 July 2021|url=https://github.com/jdmclark/gorc}}

Strike Commander

|1993 (DOS)

|2013

|Flight simulator

|Origin Systems

|In 2013 a SC reverse engineering project by Fabien Sanglard with a reconstructed source code variant became available on GitHub as the original source code was most probably lost in the take over of Origin by EA.{{cite web|url=http://fabiensanglard.net/reverse_engineering_strike_commander/index.php |title=Reverse Engineering Strike Commander |date=2014-01-22 |access-date=2014-01-23 |first=Fabien |last=Sanglard |quote=Most people assume the source codes and gold versions of all finished games were stored in a Vault somewhere at EA. But after getting in touch with people at Wing Commander CIC, it appeared that all the source code was lost when the company closed.[...] On his first day one developer managed to delete the full 900MB of Strike Commander source tree. |url-status=live |archive-url=https://web.archive.org/web/20140123153925/http://fabiensanglard.net/reverse_engineering_strike_commander/index.php |archive-date=2014-01-23 }}[https://github.com/fabiensanglard/libRealSpace libRealSpace] {{webarchive|url=https://web.archive.org/web/20141125005114/https://github.com/fabiensanglard/libRealSpace |date=2014-11-25 }} on GitHub

Styx

|1983

|1998

|Arcade

|Windmill Software

|Reverse engineered by Andrew Jenner in 1998, implemented in x86 assembly with the title Styx Remastered and released as GPL.

Super 3D Noah's Ark

|1994 (DOS)

|2015

|FPS

|Wisdom Tree

|In October 2015 a community reconstructed, under usage of already released id software engine code, source code variant became available on Bitbucket.[http://steamcommunity.com/games/371180/announcements/detail/38632993104158145 S3DNA DOS Source Code Reconstructed] {{webarchive|url=https://web.archive.org/web/20151117023127/http://steamcommunity.com/games/371180/announcements/detail/38632993104158145 |date=2015-11-17 }} on 28. August[https://bitbucket.org/NY00123/gamesrc-ver-recreation/src/a57d87f5102a/w3d_plus/?at=default w3d_plus] {{webarchive|url=https://web.archive.org/web/20151117033027/https://bitbucket.org/NY00123/gamesrc-ver-recreation/src/a57d87f5102a/w3d_plus/?at=default |date=2015-11-17 }} on bitbucket.org[http://www.classicdosgames.com/forum/viewtopic.php?f=3&t=1410&start=15 Re: Restoration of a few games' EXEs versions] {{webarchive|url=https://web.archive.org/web/20151117024508/http://www.classicdosgames.com/forum/viewtopic.php?f=3&t=1410&start=15 |date=2015-11-17 }} on classicdosgames

Super Bomberman

|1993 (SNES)

|2015

|Action, Maze

|Hudson Soft

|Reverse engineered assembly and build system of Super Bomberman by Lior Helphon on GitHub. Rebuilds several different versions of the game, and can restore some disabled debug features.[https://github.com/LIJI32/superbomberman superbomberman] {{webarchive|url=https://web.archive.org/web/20160721130113/https://github.com/LIJI32/superbomberman |date=2016-07-21 }} on GitHub by Lior Halphon

Super Mario Bros.

|1985 (NES)

|2012

|Platformer

|Nintendo R&D4

|Commented disassembly of SMB on GitHub.[https://gist.github.com/1wErt3r/4048722 A Comprehensive Super Mario Bros. Disassembly] {{webarchive|url=https://web.archive.org/web/20151026025058/https://gist.github.com/1wErt3r/4048722 |date=2015-10-26 }} on GitHub by doppelganger A statically reverse engineered version, compiling and running with SDL was developed around 2017–2018.[https://github.com/MitchellSternke/SuperMarioBros-C SuperMarioBros-C] on github.com

Super Mario Bros. 3

|1988 (NES)

|2017

|Platformer

|Nintendo R&D4

|Commented disassembly of SMB3 on GitHub.{{Cite web|url=https://github.com/captainsouthbird/smb3|title=Smb3|website=GitHub|date=20 September 2021}}

Super Mario 64

|1996 (N64)

|2019

|Platform game

|Nintendo EAD

|In 2016,[https://www.smwcentral.net/?p=viewthread&t=86160 SM64 Decompilation Project!] on SMW Central (2 October 2016){{irrelevant citation|date=November 2021|reason=This appears to be about a different project.}} enthusiasts began to rewrite every function by hand, referencing a MIPS disassembly, then compile the code with the game's original compiler in qemu-irix, resulting in an identical copy of the game. This took advantage of the fact that Nintendo didn't turn on any compiler optimizations for the first Japanese and US releases.[https://www.reddit.com/r/Games/comments/cbymz3/super_mario_64_has_been_decompiled/etjntwy/ Super Mario 64 has been decompiled on reddit] (2019) Their work was leaked on 4chan in June 2019 but it was finally released in late August of the same year.{{Cite web|url=https://github.com/n64decomp/sm64|title=n64decomp/sm64|date=March 15, 2021|via=GitHub}}

Syndicate Wars

|1996 (DOS)

|2010

|Real-time tactics

|Bullfrog Productions

|In January 2010 a reverse engineering project of the MS-DOS-based Syndicate Wars was finished by two developers and builds for Windows, Mac and Linux were released.{{Cite web|url=https://gynvael.coldwind.pl/?id=278|archive-url=https://web.archive.org/web/20160304091530/http://gynvael.coldwind.pl/?id=278|title=Syndicate Wars Port - a reverse-engineering tale|archive-date=March 4, 2016|website=gynvael.coldwind.pl}} It is complete beside networking and joystick code.[http://swars.vexillium.org/ About] {{webarchive|url=https://web.archive.org/web/20151105133733/http://swars.vexillium.org/ |date=2015-11-05 }} "Syndicate Wars Port is a port of the 1996 DOS game Syndicate Wars to modern operating systems. In particular, it runs on GNU, Mac OS and Windows, but it should also work on any system supported by the SDL library on the i386 architecture."

The Great Escape

|1986 (ZX)

|2016

|Arcade adventure

|Denton Designs

|David Thomas started in 2012 a reverse engineering project to create portable C source code from the ZX Spectrum version's binary, which reached in January 2016 compiling state.[https://github.com/dpt/The-Great-Escape The-Great-Escape] {{webarchive|url=https://web.archive.org/web/20160721130322/https://github.com/dpt/The-Great-Escape |date=2016-07-21 }} on github.com/dpt[http://slides.com/dpt/the-great-escape#/11 The Great Escape] {{webarchive|url=https://web.archive.org/web/20160417021933/http://slides.com/dpt/the-great-escape |date=2016-04-17 }} slides by David Thomas

The Last Ninja

|1987 (Amiga)

|2009

|Action-adventure game

|System 3

|Robert Crossfield reverse engineered{{Citation needed|date=June 2022}} a faithful engine{{Dubious|date=June 2022}} from the Amiga version of the game[https://github.com/segrax/TheLastNinja TheLastNinja] {{webarchive|url=https://web.archive.org/web/20160224034952/https://github.com/segrax/TheLastNinja |date=2016-02-24 }} on github.com since 2009{{Citation needed|date=June 2022}} (inactive from 2014). First two levels were partially completed.{{Cite web |date=2018-06-11 |title=GitHub - segrax/TheLastNinja: The Last Ninja Remix |website=GitHub |url=https://github.com/segrax/TheLastNinja |access-date=2022-06-14 |archive-url=https://web.archive.org/web/20180611010844/https://github.com/segrax/TheLastNinja |archive-date=2018-06-11 |url-status=live }}

The Legend of Zelda: A Link to the Past

|1991 (SNES)

|2022

|Action-adventure game

|Nintendo EAD

|Reverse-engineered assembly of the original Japanese Super Famicom version, allowing for a port to the PC written in C. The code is hosted on GitHub.[https://github.com/snesrev/zelda3 zelda3] on github.com

The Legend of Zelda: Ocarina of Time

|1998 (Nintendo 64)

|2021

|Action-adventure game

|Nintendo EAD

|Reverse-engineered over the span of two years, users decompiled the PAL debug ROM of the Master Quest release for speedrunners to more deeply understand the game.{{cite web|url=https://arstechnica.com/gaming/2020/05/beyond-emulation-the-massive-effort-to-reverse-engineer-n64-source-code/|title=Beyond emulation: The massive effort to reverse-engineer N64 source code|website=Ars Technica|date=May 6, 2020|access-date=November 26, 2021|last=Orland|first=Kyle}}{{cite web|url=https://www.videogameschronicle.com/news/zelda-64-has-been-fully-decompiled-potentially-opening-the-door-for-mods-and-ports/|title=Zelda 64 has been fully decompiled, potentially opening the door for mods and ports|website=Video Games Chronicle|last=Robinson|first=Andy|date=November 27, 2021|access-date=December 10, 2021}}

Tomb Raider: Chronicles

|2000 (PS)

|2017

|Action-adventure game

|Core Design

|Around February 2017 PSX SDK tools and debug symbols leaked to a forum which ignited a reverse engineering project on GitHub.[https://web.archive.org/web/20180217071750/https://www.kotaku.com.au/2018/02/decompiled-tomb-raider-source-code-reveals-loads-of-vulgar-commentary/ Decompiled Tomb Raider Source Code Reveals Loads Of Vulgar Words (NSFW)] by Logan Booker on kotaku.com (2018-02-17)[https://github.com/TOMB5/TOMB5 TOMB5] on GitHub[https://www.reddit.com/r/programming/comments/7v0tog/decompiling_the_original_tomb_raider_games/ decompiling_the_original_tomb_raider_games] on reddit.com Status, compiling.

Touhou Project (1 to 5)

|1996

|2014

|Shoot 'em up

|ZUN Soft

|"The Touhou PC-98 Restoration Project" was started around 2014 on GitHub on base of found source code of libraries.[https://github.com/nmlgc/ReC98 ReC98] {{webarchive|url=https://web.archive.org/web/20160829011335/https://github.com/nmlgc/ReC98 |date=2016-08-29 }} on github.com In progress.

Touhou Project (from 6 onwards)

|2002

|2014

|Shoot 'em up

|Team Shanghai Alice

|PyTouhou is a free and open-source reimplementation of Touhou 6 engine in Python and now Rust by three French programmers: Emmanuel Gil Peyrot, Thibaut Girka and Gauvain Roussel-Tarbouriech. While the Python branch is mostly complete, albeit for a few bugs, the Rust branch is still a work-in-progress. Other Touhou Project engine reimplementations after the 5th installment are a work-in-progress.{{Cite web|url=https://pytouhou.linkmauve.fr/|archive-url=https://web.archive.org/web/20200408000406/https://pytouhou.linkmauve.fr/|title=PyTouhou|archive-date=8 April 2020|website=pytouhou.linkmauve.fr}}

Transport Tycoon Deluxe

|1994 (DOS)

|2004

|Business simulation game

|Chris Sawyer/Microprose

|In 2003, Ludvig Strigeus started to reverse engineer Transport Tycoon Deluxe and convert the game to C. In 2004, this re-engineered Transport Tycoon Deluxe was released and christened OpenTTD and is still under active development by the community.

{{cite web

|title=OpenTTD 0.1.1

|work=SourceForge page about OpenTTD

|url=http://sourceforge.net/projects/openttd/files/openttd/openttd-0.1.1/

|access-date=2009-12-11

|url-status=live

|archive-url=https://web.archive.org/web/20100702210528/http://sourceforge.net/projects/openttd/files/openttd/openttd-0.1.1

|archive-date=2010-07-02

}}

{{cite web

|title=TTDPatch origin

|work=Transport Tycoon Forums

|url=http://www.tt-forums.net/viewtopic.php?p=284393#p284393

|access-date=2009-12-11

|url-status=live

|archive-url=https://web.archive.org/web/20110927110931/http://www.tt-forums.net/viewtopic.php?p=284393

|archive-date=2011-09-27

}}

Ultima 3: Exodus

|1983

|2002

|RPG

|Richard Garriott

|Disassembled and ported to GBC in 2001 by Sven Carlberg. Richard Garriott was aware and pleased by this work.[http://sven.50webs.org/u3history.html u3history] {{webarchive|url=https://web.archive.org/web/20150120074211/http://sven.50webs.org/u3history.html |date=2015-01-20 }} on sven.50webs.org

Undertale

|2015

|2019

|Role-playing video game

|Toby Fox

|The game's decompiled source code was uploaded to GitHub in February 2019, although it has since been taken down.{{Cite news|url=https://www.bleepingcomputer.com/news/gaming/decompiled-undertale-rpg-source-code-released-on-github/|title=Decompiled Undertale RPG Source Code Released on GitHub|website=BleepingComputer}}

Zorgons Revenge

|1983 (Oric)

|2014

|Shooter

|John Sinclair

|Jean-François Fabre created binary translation libraries for Oric BASIC and assembly code to portable C and used it for nine games.[http://jotd.pagesperso-orange.fr/oric_remakes.html Oric Game remakes] {{webarchive|url=https://web.archive.org/web/20160721125945/http://jotd.pagesperso-orange.fr/oric_remakes.html |date=2016-07-21 }} on jotd.pagesperso-orange.fr "I have written a set of tools to convert BASIC and asm code to C and assemble them together. I have used them over the years to convert a few games. Some conversions get some enhancements, some not." Source code re-created and released for: House of Death, L'Aigle d'Or, Le Manoir du Dr Genius, Le Retour du Dr Genius, Rendez-vous de la Terreur, Xenon 1, Strip 21, Zebbie, Zorgons' Revenge.[http://jotd.pagesperso-orange.fr/house_of_death/bin/HouseOfDeath_dev.zip HouseOfDeath_dev.zip] {{webarchive|url=https://web.archive.org/web/20160721130146/http://jotd.pagesperso-orange.fr/house_of_death/bin/HouseOfDeath_dev.zip |date=2016-07-21 }} on jotd.pagesperso-orange.fr Build available for the OpenPandora.[https://pyra-handheld.com/boards/threads/laigle-dor.75372 L'Aigle d'Or] {{webarchive|url=https://web.archive.org/web/20160721130333/https://pyra-handheld.com/boards/threads/laigle-dor.75372/ |date=2016-07-21 }} on pyra-handheld.com by ptitSeb (Dec 20, 2014)

ZZT

|1991 (DOS)

|2020

|Action-adventure, puzzle

|Tim Sweeney / Potomac Computer Systems

|ZZT{{'s}} source code got reconstructed by Adrian Siekierka in 2020.[https://retronauts.com/article/1480/zzts-source-code-has-been-reconstructed ZZT's source code has been reconstructed - Reconstruction of ZZT is a game-changer for the ZZT community] on retronauts.com by Stuart Gipp (March 17, 2020) Compilation with Turbo Pascal 5.5 produces an identical .EXE file than the original release. Done with permission from Tim Sweeney (who lost the original source code[https://www.gamasutra.com/view/feature/132426/from_the_past_to_the_future_tim_.php?print=1 From The Past To The Future: Tim Sweeney Talks] by Benj Edwards on Gamasutra "[...]if you still have those disks. TS: Sadly, I don't. It just didn't seem important. Yeah, that's the tragedy. I don't have the ZZT source code either. I wish I'd saved it all." (May 25, 2009)[https://web.archive.org/web/19991010013339/http://www.epicgames.com/zzt.htm zzt] on epicgames.com "Please don't ask for the source; if I had it, I'd release it, but I lost it in a crash a long time ago." (1997)). The source code is released under a permissive license[https://github.com/asiekierka/reconstruction-of-zzt/blob/master/LICENSE.TXT license.txt] on github.com/asiekierka/reconstruction-of-zzt on GitHub.[https://github.com/asiekierka/reconstruction-of-zzt reconstruction-of-zzt] on github.com

See also

{{Portal|Free and open-source software|Video games}}

References

{{Reflist|30em}}

External links

  • [https://archive.org/details/gamesourcecode Game Source Code Collection] at the Internet Archive

{{Free Computer Games}}

{{FLOSS}}

{{DEFAULTSORT:Open source video games}}

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Category:Lists of video games by license

Video games

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