Play Sudoku online with friends
The classic 9×9 number puzzle, reimagined for solo, co-op, or 1v1 against a calm but relentless AI.
Play Sudoku free in your browser with 1-6 players, no install and no sign-up. Share a room code and your friends join in seconds.
How to play
- 9×9 grid divided into nine 3×3 boxes.
- Each cell is either a pre-filled clue or empty when the game starts.
- Players place digits 1–9 into empty cells.
- Lenient — wrong digits flash red and can be erased; no score change.
- Strict — wrong digits cost the placer 5 points and are removed immediately.
