Strategy

Tic Tac Toe

You (X)0
Draws0
AI (O)0
Rules & strategy ↓

Your turn

About Tic Tac Toe

Play Tic Tac Toe against an AI opponent in two modes: the classic 3×3 game and Ultimate Tic Tac Toe, where every square of the big board is a small board of its own. Choose Easy, Medium or Hard — on Hard the classic AI never loses.

How to play

  1. Classic: get three X's in a row — across, down or diagonally.
  2. Ultimate: win small boards to claim squares on the big board.
  3. In Ultimate, the square you pick decides which small board your opponent must play next.
  4. If you're sent to a finished board, you can play anywhere.

Controls

  • Click or tap a square to place your X

Features

  • Classic 3×3 and Ultimate 9×9 modes
  • Three difficulty levels
  • Unbeatable minimax AI on Hard
  • Win/draw/loss tally

Strategy & practical tips

  1. In Classic, check for an immediate win, then block an immediate loss. After that, look for a fork that creates two winning lines.
  2. Against Classic Hard, a draw is a successful result with correct play. The minimax opponent is designed not to lose.
  3. In Ultimate, consider both the square you claim and the small board that move sends your opponent to. A local gain can offer a stronger reply elsewhere.

A common mistake

In Ultimate, concentrating on winning one small board while sending the opponent to a board where they can complete the big-board line.

Tic Tac Toe is free to play in any modern web browser on desktop, tablet and phone — no download, no account and no install. In games that track personal bests, records are saved in this browser and are removed if you clear site data.

More games to play

New
Strategy

Connect Four

Drop your discs and connect four in a row before the AI does. Easy, Medium or a Hard AI that looks 7 moves ahead.

  • AI Opponent
  • 3 Levels
New
Puzzle

Robot Route

Queue commands to guide a robot through 12 factory puzzles. Collect energy, toggle gates and ride conveyors in fewer moves.

  • 12 Levels
  • Programming
New
Sports

Neon Mini Golf

Putt through nine neon holes with bank shots, bumpers and moving gates. Set your power and chase a lower score.

  • 9 Holes
  • Physics
Action

Crossy Road

Cross roads, rivers and train tracks across multiple levels without getting squashed!

  • 3D
  • Levels