Play Tic Tac Toe Online
About Tic Tac Toe
Tic Tac Toe needs no explanation, but the computer opponent here might. On Hard it plays a perfect minimax game, which means the very best you can do is a draw.
Easy makes deliberate mistakes, Medium blocks the obvious threats but misses forks, and two-player mode passes the device between you.
How to play
- Choose Easy, Medium, Hard or two-player.
- Players alternate placing X and O on the 3x3 grid.
- Three in a row horizontally, vertically or diagonally wins.
- A full board with no line is a draw.
Controls
| Click / tap | Place your mark |
| R | New round |
Tips & strategy
- Taking the centre first is the strongest opening.
- If your opponent opens in the centre, reply in a corner.
- Watch for forks — a move that creates two winning threats at once is unstoppable.
Tic Tac Toe — frequently asked questions
Can I beat Hard mode?
No. Hard uses minimax with perfect play, so the best available result is a draw.
Can two people play?
Yes, there is a pass-and-play two-player mode on the same device.
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