Wild tic-tac-toe
Wild tic-tac-toe is an impartial game similar to tic-tac-toe. However, in this game players can choose to place either X or O on each move.{{Cite web|url=http://puzzles.com/puzzlesineducation/HandsOnPuzzles/WildTicTacToe.htm|title=Puzzles in Education - Wild Tic-Tac-Toe|website=puzzles.com|access-date=2016-11-29}}{{Cite book|url=https://books.google.com/books?id=dKjxBwAAQBAJ&q=wild+tic+tac+toe&pg=PA207|title=BASIC Game Plans: Computer Games and Puzzles Programmed in BASIC|last=BAUMANN|date=2013-06-29|publisher=Springer Science & Business Media|isbn=9781475739183|language=en}} This game can also be played in its misere form where if a player creates a three-in-a-row of marks, that player loses the game.{{Cite book|url=https://books.google.com/books?id=g5YWIpHTTW8C&q=wild+tic-tac-toe&pg=PA450|title=The Theory of Gambling and Statistical Logic|last=Epstein|first=Richard A.|date=2012-12-28|publisher=Academic Press|isbn=9780123978707|language=en}}
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Regular game
Wild tic-tac-toe is played on a 3-by-3 board by two players, who take turns placing an X or an O on any unoccupied square.{{Cite book|url=https://books.google.com/books?id=akCBCwAAQBAJ&q=wild+tic-tac-toe&pg=PA19|title=Introducing Game Theory and its Applications |first=Elliott |last=Mendelson |date=January 2016|publisher=CRC Press|isbn=9781482285871|language=en}}{{Cite web|url=http://www.ms.uky.edu/~lee/games2.pdf|title=Some Games for Math Circles|last=Lee|first=Carl|date=November 2022
|website=|publisher=|access-date=December 14, 2016}} The player who completes a straight or diagonal line of 3 X's or 3 O’s wins.{{Cite web|url=http://nyas-asp.wikispaces.com/file/view/Variations+of+Tic+Tac+Toe.pdf|title=Variations of Tic Tac Toe|last=|first=|date=|website=|publisher=|access-date=}} In this version of the game, the player which makes the first move can always win.{{Cite book|url=https://books.google.com/books?id=VWriBQAAQBAJ&q=tic+tac+toe+variants&pg=PA339|title=The Theory of Gambling and Statistical Logic, Revised Edition|last=Epstein|first=Richard A.|date=2014-06-28|publisher=Gulf Professional Publishing|isbn=9780080571843|language=en}}