Sudoku258 - Free Online Sudoku You Can Play Anywhere
Sudoku258 is a completely free sudoku game that runs right in your browser. No install, no sign-up, smooth on phone and desktop, available in Japanese, Simplified Chinese, and English.
How to Play (Sudoku Rules)
The 9×9 grid is divided into nine 3×3 boxes. Fill every empty cell so each row, column, and box contains the digits 1 through 9 exactly once.
Features
Daily Challenge
6 puzzles a day from Beginner to Master — the same puzzles for players worldwide.
Level Mode
Endless numbered levels in chapters of 20, with a smooth difficulty curve.
6 Difficulty Tiers
Graded by both the number of empty cells and the solving techniques required.
Check-in & Lucky Wheel
Daily check-in earns tickets; spin for extra hints and exclusive themes.
FAQ
Is Sudoku258 free?
Yes — completely free, playable instantly in your browser.
Can I play offline?
Puzzles are generated on your device, so you can keep playing even with a flaky connection.
Which languages are supported?
Japanese, Simplified Chinese, and English.
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