Ultimate Sudoku — Play Free Online

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Ultimate Sudoku

A puzzle & brain pick that earns its place next to Red Ball 4. Ultimate Sudoku is quick to learn, harder to put down, and it runs in your browser at full speed with no download.

Controls

Mouse or touch: click a cell and enter a number.

Tips

Play the first level slowly to learn the timing before you chase a score.
Use fullscreen for a bigger view; the button sits under the game.
If it stalls, reload the page — the build restarts cleanly.

Questions about Ultimate Sudoku

How do I play Ultimate Sudoku?

Mouse or touch: click a cell and enter a number.

Is Ultimate Sudoku free?

Yes. Ultimate Sudoku is free to play in your browser on zologames.com, with no download or account.

Does Ultimate Sudoku work on a phone or Chromebook?

It is an HTML5 build, so it runs in any modern browser; a keyboard makes some games easier.