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Sudoku

Fill every row, column, and box with the right digits without breaking the clues.

Genre
Puzzle
Difficulty
Medium
Play time
5-15 minutes
Updated

Controls released · Page keys restored

Immersive scene ready
Controls inactive · Focus or tap to play
Sound

Filled0
Conflicts0
Time0s
Best-

Fill every empty cell.

What is Sudoku?

Sudoku is a free browser game in the puzzle genre on Browser Game Lab. It loads directly on the page, supports desktop and touch browsers, and pairs the playable game with controls, tips, FAQs, related games, and score context.

Best for
Puzzle
Difficulty
Medium
Session length
5-15 minutes
Scoring
Lower milliseconds ranks better on the leaderboard.

How to play

Learn the objective before jumping into a new run.

  • Choose 4x4, 6x6, or 9x9, then fill empty cells with digits that fit the row, column, and box.
  • Fixed clues cannot be edited. Use Check puzzle to find mistakes or confirm a solve.
  • A solved puzzle saves your fastest local time for that difficulty.

Controls

Keyboard and touch instructions for this game.

  • Mouse or touch: select an empty cell and type a digit.
  • Keyboard: tab between cells and enter numbers directly.
  • Use Check puzzle to validate the current board.

Tips

Small habits that can improve your score.

  • Start with rows or boxes that have the most clues already filled.
  • Use elimination: if a digit cannot fit anywhere else in a box, it belongs in the remaining cell.
  • Check occasionally on larger boards so one early mistake does not spread.

FAQ

Quick answers for common questions.

Are these full Sudoku puzzles?

Yes. The game includes compact 4x4 and 6x6 variants plus a classic 9x9 mode.

Can I play Sudoku with touch?

Yes. Tap a cell and use your device keyboard to enter a digit.

When is best time saved?

Best time is saved only when the board is completely correct.

Related games

Keep the session going with another lightweight browser game.

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