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Tic-Tac-Toe

Three in a row — beat a perfect AI, or a friend.

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How to Play Tic-Tac-Toe

  1. Players take turns placing X and O on a 3×3 grid.
  2. The first to get three of their marks in a row — horizontally, vertically or diagonally — wins.
  3. If all nine squares fill with no line, the game is a draw.
  4. Choose AI difficulty or pass-and-play with a friend on the same device.

Tips & Strategy

  • Take the centre when you can — it joins four possible lines.
  • Corners beat edges: they each join three lines, edges only two.
  • Create a 'fork' (two threats at once) and your opponent can only block one.

Tic-Tac-Toe — Frequently Asked Questions

Can the hard AI be beaten?

No — on hard the computer plays perfectly with the minimax algorithm, so the best you can achieve is a draw. Every draw against it is a small win.

Who moves first?

X always opens. The first player alternates between rounds so a match stays fair.

Can two people play on one device?

Yes, switch to the two-player mode and take turns on the same screen.

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