Online tic-tac-toe
Play tic-tac-toe online against the computer (easy, medium or impossible) or with a friend on the same device, with a scoreboard.
How to useOnline tic-tac-toe
Available in: 
Online tic-tac-toe: what it is for
Choose to play against the computer or another person and click the squares to place X. Whoever gets three symbols in a row, column or diagonal wins. The scoreboard adds up wins and draws, and games alternate who starts. On impossible, the computer never loses.
How to use
- Choose the game mode.
- Click the squares to play.
- Get three in a row to win.
When to use it
- Playing with kids.
- Challenging a friend on your phone.
- Learning strategy against the computer.
Frequently asked questions
Can I win on impossible?
No. On that level the computer plays perfectly: the best possible result is a draw. It's good practice for learning not to lose.
Who goes first?
Games alternate: whoever started one plays second in the next. X always makes the first move of the game.
Is it really free?
Yes, 100% free. No sign-up, no subscription and no usage limits. All Tools123 tools are free and run right in your browser.