Tic-tac-toe · Game guide
Play now ↗Rules and controls
X starts. Take turns choosing an empty square on the 3×3 board. Connect three marks horizontally, vertically or diagonally to win. A full board with no winning line is a draw. Hard computer mode defends perfectly; a draw is a good result.
Beginner strategy
Check in this order: win now, block an immediate loss, create a fork, block an opponent's fork. Then consider the center and corners. A fork threatens two different winning lines at once. Against perfect play you cannot force a win; learn to prevent losing instead of giving away a line while attacking.
Game mode
Two-player mode means sharing this device, not online multiplayer.
Saving and deletion
Recent games and regular 2048 progress and best score stay in this browser without automatic expiry. Daily records retain the last 30 days. Gomoku, Reversi and tic-tac-toe progress is lost when closing or refreshing. Records do not transfer automatically between devices or domains.