Анна К.
I do morning Sudoku with coffee. Pencil marks and error highlights are handy.
Sudoku
Sudoku online free. Classic Japanese number puzzle 9×9 with easy, medium and hard levels.
3 Difficulty LevelsError CheckHintsBrowser-BasedNo RegistrationFree
Difficulty Levels
Pick a level to start playing instantly
About Sudoku
Sudoku is a free online game you can play directly in your browser — no downloads, no registration, no ads in gameplay.
All games run locally on your device for instant response and complete privacy.
More Sudoku
Sudoku Rules
Fill the 9×9 grid with digits 1–9 so every row, column, and 3×3 box contains each digit exactly once. Some cells are pre-filled — work from them, deducing where each missing number must go. Tap a cell and choose a digit; the game flags any mistakes.
How it works
1
Pick a game
Choose from 40+ free games across 8 categories — puzzles, card, board, arcade and more.
2
Click "Play Sudoku"
The game opens in your browser instantly. No registration, no download, no waiting.
3
Keep your progress
Scores and progress save locally on your device. Nothing is sent to a server.
Why play Sudoku here
100% Free
All games are free with no limits. No paid levels, subscriptions or in-app purchases.
No Registration
Start playing immediately. No account, no email, no setup.
No Download
Games run directly in your browser. No apps, no extensions, no installs.
Instant Start
Pages load in a second. Games launch immediately — no waiting.
Privacy First
Everything runs locally. Progress and data never leave your device.
Any Device
Phone, tablet, desktop — works anywhere you have a modern browser.
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What players say
4.8 · 2,259 reviews
Дмитрий С.
Four difficulty levels — from easy to expert. The timer keeps pushing my record.
Мария П.
Sudoku with auto-check is great. You instantly see the mistake without redoing the grid.
Mark B.
Best free Sudoku I've tried. Hints are measured, timer persists across sessions.
Ольга С.
Totally hooked — hard really is hard. An hour in and I can't stop.
Kevin D.
Great Sudoku, but I'd love an 'expert+' level. Otherwise — perfect.
Светлана Б.
Progress persists when I accidentally close the tab — no lost hour.
Иван К.
Sudoku in dark mode — eyes don't tire after an hour. Great for late-night play.
Юлия Д.
Best browser Sudoku. Zero ads, snappy, keeps stats.
Frequently Asked Questions
Ready to Play Sudoku?
Hit play and start instantly — free and in your browser.