About the game
Play Tic-Tac-Toe online
The classic 3×3 standoff — first to line up three in a row wins.
Play Tic-Tac-Toe online free — vs AI, pass-and-play with a friend, or online against a real opponent. Quick 1–2 minute X and O matches in your browser.
Play vs AI, pass-and-play with a friend on one screen, or online against a real opponent — free, in your browser, no sign-up.
How to play Tic-Tac-Toe
- 1Choose a mode: vs AI, pass-and-play with a friend, or online against a real opponent.
- 2Players take turns — X always goes first, then O.
- 3Tap any empty square to place your mark.
- 4Line up three of your marks in a row — across, down, or diagonally — to win.
- 5Block your opponent's two-in-a-row to stop them completing a line.
Rules
- The board is a 3×3 grid; one player is X, the other is O.
- Players alternate turns, placing one mark per turn on an empty square.
- Three of your marks in a line — horizontal, vertical, or diagonal — wins the game.
- If all nine squares fill with no line, the match is a draw.