Best Free Ultimate Tic-Tac-Toe Game
Win small boards to claim the 3×3 meta-grid - but every move sends your opponent to the next board.
Level 1
press P to pause
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How to play
- Play your X. Click any cell in the highlighted small board. You move first as X.
- Send your opponent. The cell you pick decides which small board the computer must play in next - use that to control the game.
- Win three boards in a line. Claim small boards with three in a row, then line up three claimed boards to win.
About Ultimate Tic-Tac-Toe
Ultimate Tic-Tac-Toe takes the game you already know and nests it inside itself. The board is a 3×3 grid of nine small tic-tac-toe boards. You play X, the computer plays O, and you win a small board the usual way - three in a row. The twist is the send-to-board rule: the square you choose inside a small board decides which small board your opponent must play in next. Win three small boards in a line to win the whole game. If you’re sent to a board that’s already finished, you may play in any open board. Pick a difficulty. No signup, no download.
Frequently asked questions
The board is a 3×3 grid of nine small tic-tac-toe boards. You play X and move first; the computer plays O. You win a small board with three in a row, and you win the game by winning three small boards in a line.
The position of the cell you play inside a small board tells your opponent which small board they must play in next. If you play the top-right cell, your opponent must play somewhere in the top-right small board.
When the small board you’re sent to is already finished, the restriction is lifted and you may play your move in any open small board of your choice.
Easy plays random legal moves. Normal uses a short minimax search with a board-scoring heuristic. Hard searches several moves deeper with alpha-beta pruning, so it sets up forcing sequences and is much harder to beat.
Yes. If every small board is finished and no one has three claimed boards in a line, the game is a draw.
Completely free, with no signup, no download and no paywall - it runs entirely in your browser, and nothing is uploaded.
Yes. It runs in your browser, so Ultimate Tic-Tac-Toe works on phones and tablets as well as desktop - there is no app to install.
No. Ultimate 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 - Ultimate 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.