Sudoku
The world's favourite number-placement puzzle, with gentle hints when you need them.
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About this game
The world’s favourite number puzzle. Fill the 9×9 grid so every row, every column and every 3×3 box contains the digits 1 to 9 exactly once. Every puzzle is freshly generated with a single, logical solution — with pencil notes, hints and gentle mistake-checking to help you grow.
How to play
- Tap a cell, then tap a number (or use your keyboard) to fill it.
- Each row, column and 3×3 box must contain 1–9 with no repeats.
- Turn on Notes to pencil in small candidates for a cell.
- Use Hint if you get stuck, Undo to step back, and Erase to clear a cell.
- Wrong entries are gently highlighted — finish the grid to win.
Good for your mind
Healthy by design
Healthy timer
Choose 1–15 minutes, or no timer for calm games. Play stays balanced.
Gentle breaks
Soft reminders to pause and rest your eyes after a while of play.
Kids & senior modes
Bigger buttons, calmer pace and night mode for comfortable play.
Fully offline
Installs as an app and plays without internet — your scores stay on your device.
Questions, answered
Do I need to download anything?
No. Every game plays instantly in your browser. You can also install Kriyasya Brain Games as an app and play fully offline.
Is this game free?
Many games are free — just sign in to play. Every other game is included with the Games Pass: with an active Kriyasya membership you unlock the Games Pass using your credits, for a flat 30-day access to them all. There is no per-game charge. Your membership must stay active to use the Games Pass — if it lapses, access pauses (your pass days keep counting) and resumes when you renew.
What is the healthy timer?
Before you play you choose a play time — 1, 3, 5, 10 or 15 minutes, or no timer for calm games. We add gentle break reminders so screen time stays balanced.
Is it suitable for kids and seniors?
Yes. Kids and senior modes offer bigger buttons and a calmer pace, and night mode dims the screen for comfortable evening play.
Are my scores private?
Yes. Your best scores are saved privately on your own device and are never uploaded.
Is this available in Hindi?
Yes. The whole app works in English and हिन्दी — switch any time from the top of the page.
More games like this
Other games in this category
A friendly 6x6 Sudoku that's perfect for a quick, satisfying solve.
Sudoku with cage sums for an extra layer of arithmetic challenge.
A crossword built from numbers — fill the runs to match each sum.
Place digits so every across and down total is exactly right.
Ready to play?
Pick a healthy play time and enjoy — gently, at your own pace.
Play now — Sudoku