Sudoku classic

Contains adsIn-app purchases
4.2
8.01K reviews
Content rating
Everyone
1M+
Downloads
Content rating
Everyone
In-Game Purchases
Learn more
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About this game

A classic game!
To solve the game you must complete the puzzle by filling in all the numbers (from 1 to 9) so that each digit does not repeat in the same row, column or block.
This app will become your favorite Sudoku game.

WAIT!, THERE'S MORE!
Includes cool color themes, with a night mode theme.
You are able to change the letter font.
Win trophies by solving each daily sudokus.
Customize the game UI depending on your expertise

【 HIGHLIGHTS 】
✔ Minimalist, simple and fun game.
✔ 7 difficulty levels
✔ Many customizable aids
✔ Full game is free, with very few ads (no ads while playing)
✔ Exercise your brain and relax solving suokus!
✔ Beautiful and simple user interface (portrait and landscape)
✔ Compatible with all devices including tablets
✔ Includes sounds (can be disabled) and images in HD
✔ Infinite Sudoku generator
✔ No intrusive permissions

【 CUSTOMIZATION 】
You can customize some features of the game (from the settings option):
* Play or mute the sounds.
* Language.
* Animations
* Device orientation.
* Full screen or not

【 DIFFICULTY LEVELS 】
◉ 1 - Very easy : Suited for people learning how to solve Sudoku.
◉ 2 - Easy : Recent studies show that playing Sudoku helps elderly people memory. Just do it!
◉ 3 - Intermediate : You will be able to finish Intermediate level games using basic techniques: Hidden singles and Naked singles.
◉ 4 - Hard : This puzzles need to use some intermediate techniques: Pointing pairs, Naked pairs, etc.
◉ 5 - Expert : This are intended for advanced players that can combine many intermediate strategies.
◉ 6 - Extreme : To solve this grade puzzles you'll need to use some advanced strategies: X-Wing, Y-Wing, Swordfish, etc.
◉ 7 - Nightmare : Only pro players will be able to finish this games. This is a real challenge. Maybe you'll need some luck to solve it :)
All Sudoku have only ONE possible solution.
◉ 8 - Grandmaster: This are considered the hardest sudoku to complete. Will you be able to succeed?

All sudokus have only ONE possible solution.
Just one more thing...
ENJOY !!!

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Any suggestion or bug report is welcome. Please, before writing a bad review contact us by email at [email protected]
Updated on
Apr 16, 2026
Available on
Android, Windows

Data safety

Safety starts with understanding how developers collect and share your data. Data privacy and security practices may vary based on your use, region, and age. The developer provided this information and may update it over time.
This app may share these data types with third parties
App activity, App info and performance, and Device or other IDs
This app may collect these data types
App activity, App info and performance, and Device or other IDs
Data is encrypted in transit
Data can’t be deleted

Ratings and reviews

4.2
7.15K reviews
Tyler Giusti
January 28, 2025
I've been playing one "Nightmare" mode game for multiple years. I've restarted the same game multiple times. I'm very well versed at various forms of Sudoku. I am confident in saying at this point that the puzzle this app generated is impossible. Not just very difficult. No, it's literally not possible to solve. Don't use this app if you want puzzles that can be solved.
19 people found this review helpful
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Malcolm Rodrigues
January 19, 2026
After downloading all the other Sudoku Apps I found this to be the best. Simple interface minimum ads. And the best part is you can upload your own Sudoku and the app checks if it is okay.
3 people found this review helpful
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Quarzo Apps
January 19, 2026
Hi there! Thanks for your fantastic review! We're thrilled you enjoy our Sudoku app's simple interface and ad-light experience. The upload feature is one of our favorites too! 😊 Don't forget to check out other fun games by Quarzo Apps. If you have more feedback, reach us at [email protected]. Kind regards, Pilar from Quarzo Apps
TWAHIRWA NATHAN
March 23, 2026
Nice game but what would make it even better is if you add an option for candidate highlighting
Did you find this helpful?
Quarzo Apps
March 23, 2026
Hi there! Thanks for your great feedback and suggestion. We're thrilled you enjoy our game! 🎮 Our team will consider your idea for future updates. Feel free to check out our other fun games. If you have any more thoughts, reach out to [email protected]. Kind regards, Pilar from Quarzo Apps

What’s new

♥ Thank you for your support and comments! +1 000 000 Downloads !!!
🔥 8 Difficulty Levels!
📜 Sudoku history.
✏ Editor and share!
🏆 Solve the daily Sudoku and win trophies.
🧠 Train your brain.
🤖 Infinite puzzle generator.
🛠 Full customizable app

Any suggestion or bug report is welcome.
Please, before writing a bad review contact us by email at [email protected]