Play and adjust difficulty in real time
Solve with classic gameplay rules. Avoid repeating numbers in rows, columns, or 3×3 grids. Adjust difficulty in real time. Select from Easy, Medium, Hard, Master, or Daily Challenge. Track progress with detailed performance insights.
Showing 101–120 of 1,000 ranked alternatives.
By Aliens L.L.C-FZ
Solve puzzles and reveal pixel art
Solve puzzles by interpreting row and column clues to fill grids. Complete puzzles to reveal pixel art images. Track progress and unlock new puzzles daily. Adjust difficulty settings to challenge yourself.
Volcano Entertainment Limited
Play and solve puzzles
Solve puzzles with 15,000+ levels and 10 variations. Use an exclusive hint system to guide solving. Track progress and statistics. Adjust difficulty settings. Share completed puzzles.
Keitgen GmbH
Play puzzles anytime, anywhere
"Play and solve puzzles with adjustable difficulty levels. Customize grid size and pencil marks. Track progress and restart puzzles. Share completed grids via email or social media."
KraiSoft Limited
Play , customize difficulty, track progress
Play with adjustable difficulty levels and customizable puzzle settings. Use hints, error highlighting, and note-taking features. Track personal times and compare with others. Solve puzzles on a clean, distraction-free interface.
PlaySimple Games Pte Ltd
Play and challenge others
Play puzzles in a 9x9 grid with adjustable difficulty. Challenge friends or players online in competitive duels. Receive adaptive hints and notes during gameplay. Save progress and play offline without an internet connection.
YiKun Chiang
Play puzzles from easy to advanced
"Play puzzles with difficulty levels from easy to advanced. Fill grids with numbers 1-9. Get hints and check progress. Customize grid size and themes."
1UP GAMES STUDIO SL
Play and solve puzzles
Solve puzzles with gameplay and multiple difficulty levels. Use hints and notes to assist with challenging sections. Track progress and revisit previous puzzles for continued practice.
Shanghai Unfov Fin-Tech Service Co., Ltd.
Solve puzzles and unlock combos
Solve puzzles by arranging wooden blocks in a grid. Combine elements from and games. Complete daily challenges to improve spatial reasoning. Place blocks to clear rows and create combos. Adjust difficulty levels and track progress over time.
TPG TECNOLOGIA DA INFORMACAO LTDA
Play puzzles and solve equations
Play Mathdoku+ to solve and puzzles. Choose from 3x3 to 9x9 grids. Use check and hint features for assistance. Track progress through multiple difficulty levels. Develop reasoning, , and skills.
TOKYO KYOKUJOY LLC
Play puzzles anytime, anywhere
Play puzzles in a horizontal layout with large numbers for easier reading. Solve grids with varying difficulty levels. Track progress and revisit previous puzzles. Share completed puzzles with friends.
Nick Carney
Play and solve puzzles
Solve -themed puzzles with three types: Knight , King , and Queen . Fill grids with numbers following rules and piece movement constraints. Track progress and access 15 new puzzles.
Kathryn Aaker
Solve with simple rules
Solve placement with 2 rules: each row, column, and region has exactly 2 stars; no stars can touch, including diagonally. Track progress and access from KrazyDad, featured in the New York Times.
Red Key Software Corporation
Play puzzles of varying difficulty
(Free) lets users play puzzles with four skill levels. Features include showing incorrect answers in red and using smart buttons. Users can track progress, undo moves, and reset puzzles. Options allow customization of game settings.
Quartz Games LLC
Play puzzles
Play puzzles on a 9x9 grid with pre-filled numbers. Fill the grid without repeating numbers in rows, columns, or 3x3 quadrants. Available without internet connection. No ads.
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