Tic Tac Toe
Classic X and O - vs computer or two players on one screen
100% free. Runs entirely in your browser - your files and data never leave your device and nothing is uploaded to any server.
Your turn - place an X
- X and O take turns starting, so every round is fair.
- On hard, the 3×3 computer never loses - aim for a tie!
About this tool
The classic X and O grid game - get three in a row before your opponent does, whether you're playing against the computer or a friend taking turns on the same screen.
How to use this tool
- Choose opponent modeStart vs computer or local friend.
- Control key squaresTake center/corners to create stronger lines.
- Block and forkPrevent opponent wins while building dual threats.
- Finish or force drawComplete row/column/diagonal or secure safe outcome.
How to play tic tac toe
Players take turns placing X and O on a 3 x 3 grid. The first to get three of their marks in a row - across, down or diagonally - wins; if all nine squares fill without a line, it is a draw. The game is also known as noughts and crosses.
Play the computer at easy, medium or hard, or a friend on the same screen. On hard the computer plays perfectly, so the best you can do is a draw - start in a corner and watch for a fork, a move that threatens two lines at once.
Key features
- Teaches core strategy and anticipation basics.
- Fast rounds with clear win/draw outcomes.
- Great beginner game for planning skills.
- Works equally well for solo and two-player play.
Common uses
- Quick strategy challenge between tasks.
- Teaching kids turn-based planning.
- Practicing defensive/offensive balancing.
- Casual game sessions in classrooms.
Tips for better results
- Center is usually strongest first move.
- Scan board for two-in-row threats every turn.
- Use corners to create fork opportunities.
- Play for draw if winning line is unavailable.
Mistakes to avoid
- Ignoring immediate block requirements.
- Playing random edge moves too early.
- Missing fork setups by opponent.
- Focusing attack while losing defensively.
Frequently asked questions
No - with optimal play from both sides, Tic Tac Toe always ends in a draw; it's only losable against a perfect opponent if you make a mistake, which is part of what makes it a good game for learning basic strategic thinking.
Given the game's simplicity, a well-built AI can play perfectly (never losing) - check if difficulty levels are offered if you want an easier opponent to practice against.
Yes - two-player mode lets you and a friend take turns marking X and O on the same device.
A corner is the strongest opening: it gives the opponent the most ways to go wrong. The centre is also safe. If your opponent takes a corner, reply in the centre to avoid a quick fork.
A move that creates two lines of two at once. Your opponent can only block one, so you win with the other - it is the main way to beat a player who does not look ahead.
Yes. It teaches taking turns, spotting patterns and thinking one move ahead, and a game lasts under a minute.