Tic-Tac-Toe
Play noughts and crosses against a friend or an unbeatable computer opponent.
How to play
- Take turns placing your mark in an empty square. You are X, the computer is O.
- Line up three of your marks in a row — horizontally, vertically or diagonally — to win.
- Switch to “2 players” to play against a friend on the same device.
The computer plays a perfect game — the best you can do is a draw.
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About Tic-Tac-Toe
Tic-Tac-Toe — known as noughts and crosses in Britain — is one of the oldest pen-and-paper games in the world, with roots stretching back to ancient Rome. Two players alternate marking a 3×3 grid, racing to place three of their symbols in a row.
This version offers two ways to play: challenge a computer that plays a mathematically perfect game, or switch to two-player mode and share the screen with a friend. Because perfect play from both sides always ends in a draw, holding the unbeatable computer to a tie is itself the victory. A running scoreboard counts wins, losses and draws, and the game is free in any browser.
How to use Tic-Tac-Toe
- Choose your opponent: vs Computer, or 2 players to share the device with a friend.
- You play X and move first — click or tap any empty square to place your mark.
- Take turns; the computer answers as O in solo mode.
- Line up three of your marks in a row — horizontally, vertically or diagonally — to win.
- Watch the scoreboard tally wins and draws, then start a new round to keep the series going.