Best Free Tic-Tac-Toe
Play Tic-Tac-Toe against a computer that plays perfectly — you are X.
Level 1
press P to pause
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How to play
- Place your X. Click any empty square to place your mark. You go first.
- Block and build. Try to get three X’s in a row while blocking the computer.
- Aim for a draw or win. The computer plays perfectly — force a draw, or catch a slip.
About Tic-Tac-Toe
Play Tic-Tac-Toe (noughts and crosses) against a computer that never makes a mistake. You play X and move first; the computer plays O using a perfect strategy, so the best you can force is a draw — see if you can avoid losing. It’s a quick, classic brain teaser that runs entirely in your browser. No signup, no download.
Frequently asked questions
Players take turns marking squares in a 3×3 grid. You are X and move first; the first to get three of their marks in a row — horizontally, vertically or diagonally — wins.
The computer plays a perfect strategy, so it can’t be beaten with correct play — the best you can force is a draw. If you ever win, it’s because the game let you; normally a draw is the top result.
Taking a corner is the strongest opening against a perfect opponent, giving you the most chances to create a fork. The centre is also strong.
Yes. Tap a square to place your X; the board scales to your screen.
The computer uses the minimax algorithm, which evaluates every possible continuation, so it never makes a losing mistake.
Yes — free, no signup, no download, played entirely in your browser.
No. Tic-Tac-Toe works with no signup at all; an optional free account only exists to unlock higher usage limits.
Usually just a few seconds for a typical file — Tic-Tac-Toe starts working the moment you give it your input.
Your input is processed in memory and never stored, so nothing is left behind once you have your result.
Casual use is unlimited, under a generous fair-use cap that keeps it fast for everyone.