Ultimate Tic-Tac-Toe
Win small boards, then claim three in a row on the big board. Each move sends your opponent to a matching small board. For 2 players. Free, no sign-up.
Play over time
Ultimate Tic-Tac-Toe in 30 seconds
- Set upNine small 3×3 boards form a big 3×3 board. X goes first, then O.
- SendThe first move is free. Your square determines the small board your opponent plays in next.
- ClaimLine up three marks on a small board to claim it.
- WinClaim three small boards in a row, column or diagonal to win.
At a glance
| Item | This game |
|---|---|
| Players | 2 players |
| Play time | About 10 min |
| Type | Board |
| Ranked play | No |
| Practice against the CPU | Yes |
| Price | Free (no account needed) |
| Rights holder | A public-domain classic game |
| Last updated | 2026-10-30 |
How to play Ultimate Tic-Tac-Toe online with friends
- Tap "Play with friends"A party is created with a 6-character code. No account is needed.
- Send a link or QR codeShare it on LINE, or just read the code aloud.
- Everyone opens it in a browserOnce 2 players have joined, the host taps "Start".
Rule highlights
Setup, play, winning, and house rules
Setup
- For 2 players. Playing alone, you face the computer.
- Nine small 3×3 boards form one big 3×3 board (81 squares). X goes first, then O. The first seat starts; the first move switches after each game.
How to play
- The first move can go anywhere. After that, the position you just played inside its small board sends your opponent to the matching small board next. For example, playing in the top-right square sends them to the top-right small board. If that board is already decided (won or drawn), your opponent may play in any undecided board instead.
- Winning three in a row inside a small board claims it — a large X or O marks the claimed board, and that small board can no longer be played. If a small board fills with no line of three, it is drawn and closed.
Winning
- Line up three claimed boards on the big grid to win. If every small board is decided with no line on the big grid, the whole game is a draw.
- You may give up at any time; giving up loses the game.
House rules
| Name | Description | Default | Changeable |
|---|---|---|---|
| Alternate first move | Switch who goes first (X) after each game. | On | Yes |
Recommendations
Play this game once to write one.
Send feedback or a bug about this game
Request a setting for this game
We publish the feedback you send and what we do about it here
FAQ
How many can play?
It is a two-player game. On your own, you can play against the computer.
What is Ultimate Tic-Tac-Toe?
Nine linked 3×3 boards form a big board. Each move sends your opponent to a matching small board; claim three small boards in a row to win.
Is it free?
Yes. It is free and runs in your browser with no sign-up.
Can I play on a phone?
Yes. No app is needed — just open it in a browser. You can join the same party as people on a PC or tablet.
Can two people play?
Yes. This game supports 2 or more players.
Can I play against the computer (CPU)?
Yes. You can play against computer opponents without inviting anyone.
Can I play online with friends far away?
Yes. Start a party and send its invite link. Friends can join in their browsers without signing up.
Is there an app?
This is a free app that runs in your browser. No installation is needed.
Can we play without being online at the same time?
Yes. Choose “Turn-based (told each turn)” and you can make one move whenever you like. We tell you when it is your turn. A Party ends automatically, with no winner or loser, after 45 days without a move.
Rights holder and physical edition
This is a public-domain classic game. The rules follow the standard reference rules.
Related games
Same type (Board)
Same player count
Last updated 2026-10-30 · Run by Qdan, Inc.