About Tic-Tac-Toe
Tic-Tac-Toe is the pocket classic of Xs and Os: three in a row wins, and every playground in the world has hosted a championship.
How to play Tic-Tac-Toe
Take turns placing your mark on the 3×3 grid. Line up three in a row — across, down or diagonally — before your opponent does. Block them, trap them, win.
Questions & answers
- How do you win Tic-Tac-Toe?
- Make three in a row while blocking your opponent's threats. Grabbing the center square first gives you the most winning lines — that's the classic opening.
- What does Tic-Tac-Toe teach?
- Turn-taking, thinking one move ahead, and eventually the big discovery that perfect play always ends in a draw — a first taste of game theory.
- Is it free?
- Yes, free on crumble.lol in the browser — grab a friend and play.