About Sudoku Skyline
Play free online Sudoku with three difficulty levels and a clean, responsive 9×9 board. Fill each row, column and 3×3 box with digits 1–9, sharpen logical reasoning and enjoy new number puzzles on every visit.
How to Play Sudoku Skyline
Click or tap an empty cell, then enter a number using the on-screen keypad or your keyboard. Each row, column and 3×3 region must contain the digits 1 to 9 exactly once. Start with Easy mode or choose Medium and Hard for more demanding puzzles.
- Choose Easy, Medium or Hard.
- Fill an empty square using the number keypad or keyboard.
- Each row, column and 3×3 square must use 1–9 once.
- Finish all 81 squares without conflicting values.
Open-source adaptation based on the original project. MIT license and attribution.
What Makes This Game Fun?
Each round gives you a new challenge with a clear objective, visual feedback and a score to improve. Play for free in your browser, with no registration or downloads. The game is designed for both mouse and touchscreen interaction; some games also support keyboard controls.
Practice Your Skills
Sudoku Skyline encourages you to think through the rules, make decisions and try again after mistakes. Replay to develop better strategies, improve your results and explore new challenges.