About Tic-Tac-Toe
Tic-Tac-Toe (Noughts and Crosses) is a two-player classic on a 3×3 grid. Take turns marking squares; the first to line up three of their marks wins. Our "Unbeatable" computer uses the minimax algorithm — the best you can do against it is a draw.
Can I beat the unbeatable computer?
No — it plays perfectly. With best play, Tic-Tac-Toe always ends in a draw, so aim for a draw against Unbeatable, or switch to Easy mode for a winnable game.
Is the running score saved?
Yes. The X / O / draw tally is saved locally in your browser until you tap "Reset score". Nothing is uploaded.