A browser Sudoku game with four difficulty settings, pencil Notes, Undo and explanatory Hints. Try classic 9×9, a smaller 6×6 practice board or a dated Daily puzzle. Published by ManyPlay; AI-assisted development. The background SDK uses the test platform; ad rewards are unavailable.
Select a cell, then a digit. Each row, column and box must contain every digit once. Toggle Notes to mark candidates; Hint explains one step before Place enters it. Undo reverses a move but does not refund a used hint.
Sudoku — ManyPlay was submitted to SlowDen by ManyPlay. SlowDen did not make this game - it is published here from the developer's own submission, added on 2026-10-29. It runs in the browser with no download, no install and no sign-up.