Tic-tac-toe is a paper-and-pencil game but now available on android phones for two players, X and O, who take turns marking the spaces in a 3×3 grid. The player who succeeds in placing three of their marks in a horizontal, vertical, or diagonal row is the winner. It is a solved game with a forced draw assuming best play from both players.
Keep Away Your Pencil and Paper, Play Tic Tac Toe on your Android phone for free
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