The Classic Number Puzzle Game
Classic 9×9 Sudoku with a clean, modern design that you can play offline anywhere. Four difficulty levels, hints that teach real solving techniques, and pencil marks just like on paper. Free to play with ads, and a one-time purchase removes all ads.
Train your logic, memory and focus. A few minutes a day is a relaxing brain workout.
A hint shows the solving technique you can use right now and highlights the cells involved, so every hint teaches you something.
Pencil marks for candidates, unlimited undo, duplicate highlighting and automatic mistake detection.
Race your own best time, or leave mid-game and continue right where you stopped.
No internet needed to play. Light and Dark mode, made for phones and tablets.
Available in English, Vietnamese and Japanese.
Place digits 1–9 in the empty cells of the 9×9 board.
Each row must contain every digit from 1 to 9 exactly once.
Each column must also contain every digit from 1 to 9 exactly once.
Each of the nine 3×3 boxes must contain every digit from 1 to 9.
New to Sudoku? Read the full guide: rules, tips and beginner strategies →
Expert unlocks after you win a Hard game.