Tic Tac Toe Online

A 3×3 board in your browser — a 2 player game (also called noughts and crosses). Invite a friend with a private link, sit next to someone on the same device, or try unbeatable Hard AI. No account.

Your turn (X)

You 0 · Computer 0 · Draws 0

Hard uses unbeatable minimax. The best you can force is a draw.

How to play

Players take turns placing X and O. Three in a row — across, down, or diagonal — wins. If the board fills with no line, it is a draw. Read the full walkthrough if you are teaching someone new.

How to play online with a friend

Choose Online With Friend, tap Create Game, and send the invite. The board unlocks when they join. Details live on the Tic Tac Toe online page and in the guide Tic Tac Toe online with friends.

Tic Tac Toe rules

X starts. One mark per turn. No overwriting. The first complete line wins immediately. The rules page lists what does not count as a house variant.

Tic Tac Toe strategy

Win if you can, block if you must, then look for forks. Center and corners beat side cells. Learn Tic Tac Toe strategy that forces a draw against Hard AI.

Who it’s for

This is a 2 player game — two friends, a couple, or siblings on one phone. Also listed under 2 player games, games for friends, games for couples, and family games. Also known as noughts and crosses.

Frequently asked questions

Can I play Tic Tac Toe online with a friend for free?

Yes. Create a private room, share the link or room code, and play in real time. No account is required.

What is the difference between Easy and Hard?

Easy picks random legal moves. Hard uses unbeatable minimax and will not lose if you both play legally.

Can two people play on the same phone?

Yes. Choose Local 2 Player and pass the device. X and O take turns on the same board.

What happens if my friend disconnects?

The game waits for them to reopen the same link. If they are gone too long, the room expires.