Showing 1–20 of 1,000 ranked alternatives.
Staple Games, LLC
Play and solve puzzles
Solve puzzles by filling 9×9 grids with digits 1-9. Choose from four difficulty levels. Store notes for possible numbers. Use hints to fill missing digits. Complete daily challenges. Clear grids when all numbers are placed.
Stanley Lam
Play in five overlapping grids
Play with five overlapping 9x9 grids. Solve puzzles following standard rules. Choose from five difficulty levels and various types like Gattai and Butterfly. Use the Hint feature to auto-fill the board with non-conflicting numbers.
Tim O's Studios, LLC
Play Sudoku and solve puzzles
Play Sudoku to challenge your mind with a 9×9 grid. Fill rows, columns, and 3×3 sub-grids with digits 1–9. Choose from easy, medium, hard, or expert levels. Disable numbers after all instances are entered. Use note-taking and hints when needed.
Tobeas Brennan
Play puzzles, fill notes, solve grids
Play with pencil and interface. Use Apple Pencil for writing and erasing. Auto-fill notes on demand. Solve puzzles with interactive solver mode. Add pencil marks and highlights. Check for errors with one click.
Boy Howdy Technology LLC
Play puzzles and track progress
Play puzzles with multiple difficulty levels. Highlight numbers for easy tracking. Solve without time limits or penalties. Share achievements and compete with friends. Customizable settings for gameplay preferences.
Staple Games, LLC
Clear blocks to earn combos and streaks
Play a by placing pieces into a 9x9 grid. Clear lines or 3x3 boxes to remove blocks and earn points. Extend combos and streaks for higher scores. Continue until no more moves are possible.
勇 殷
Play , get hints, track progress
Play with puzzles of varying difficulty levels. Use hints, notes, and auto-check features. Complete puzzles without assistance. Track progress across multiple difficulty settings.
Mind The Frog, Inc.
Play puzzles anytime, anywhere
Solve puzzles with 6 difficulty levels and unlimited grids. Track progress with daily challenges. Undo and redo moves. Manage 10 grids simultaneously. Adjust music playback without interruptions. Sync puzzles across devices.
Mind The Frog, Inc.
Play with no distractions
Solve puzzles with 6 difficulty levels from easy to diabolical. Access unlimited grids offline or online. Complete daily challenges. Use undo/redo features. Track 10 concurrent games. Adjust settings for music playback.
nerByte GmbH
Play puzzles and train your brain
Play puzzles with adjustable difficulty levels. Enter numbers manually or use pencil marks. Track progress across multiple . Receive hints when stuck. Switch between different puzzle themes. Share completed puzzles with friends.
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