Sudoku - Classic Brain Puzzle

Contains adsIn-app purchases
4.3
178K reviews
10M+
Downloads
Content rating
PEGI 3
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About this game

Sudoku: Champions Challenge & Global Leaderboards!
Join the ultimate Sudoku adventure with Sudoku by Volcano! Compete in the exclusive Champions Challenge and climb global leaderboards to prove you’re the world’s top Sudoku master! This free puzzle game is perfect for relaxing, training your brain, and challenging your logic skills. Whether you’re a Sudoku beginner or an expert, our classic Sudoku offers endless fun for all.

Why Play Sudoku by Volcano?

Champions Challenge: Battle players worldwide in thrilling daily Sudoku competitions. Win rewards and earn bragging rights as a Sudoku champion!
Global Leaderboards: Track your rank against millions of players and aim for the top spot in our global Sudoku rankings.
8 Difficulty Levels: From easy Sudoku to extreme Sudoku, find your perfect challenge.
Sudoku Variations: Explore unique twists like Squiggly, X, and Color Sudoku puzzles.
Smart Hint System: Learn how to solve Sudoku with step-by-step guidance, animations, and colorful visuals—great for Sudoku kids and pros.
Custom Puzzles: Create your own Sudoku puzzles or import from paper.
Over 15,000 Free Puzzles: Endless Sudoku games to keep your mind sharp.
Game Features for a Fun Experience:

Auto-highlighted numbers for smarter hints.
Pencil marks and error-checking tools.
Unlimited undo/redo for stress-free play.
Dark Mode to protect your eyes at night.
Offline Sudoku: Play anywhere, no internet needed.
Share your Champions Challenge victories via Twitter or Facebook.
Auto-save to pause and resume without losing progress.
Fun visuals and numerals like Chinese numbers.
Go Ad-Free with Premium Access:

Enjoy Sudoku without ads and unlock exclusive features with Premium Access for a seamless puzzle-solving experience.

Train Your Brain & Compete Globally:

Dive into the Champions Challenge and global leaderboards for a mindsport thrill. With stunning designs and intuitive gameplay, Sudoku by Volcano is the ultimate logic puzzle game to boost your brainpower.

Download Now for FREE and start dominating the Champions Challenge today! Share your feedback to help us make the best Sudoku app even better.
Updated on
Apr 22, 2025

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
Location, App activity and 2 others
This app may collect these data types
Personal info, Financial info and 2 others
Data is encrypted in transit
You can request that data be deleted

Ratings and reviews

4.3
153K reviews
Kevin Thompson
May 11, 2025
Excellent controls for entering numbers in the way you want. Puzzles are properly formatted (symmetrical) unlike so many other games available. Love this! *** notice, when opening the app, there is a notification coming up saying you need to install the new version. Pretty sure that it's spam.
21 people found this review helpful
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Neville Bokaba
February 21, 2024
The "search" button is too close to number 9, end up clicking it by mistake and it ruins the entire experience because it shows ir highlights mistakes I.e. gives the wrong answers when I'm trying to solve the game myself. Especially hard and above. It should be placed elsewhere other I can just get another Sudoko that won't reveal answers to me and deny me using my brain. Not sure why it's there to begin with. (Memo) one should either be able to solve or not without solutions or mistakes.
1 person found this review helpful
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Volcano Entertainment
February 21, 2024
Hello, you can always customized the whole keypad in the settings if you don't like any sepecific button, like move it to somewhere elese where you like, or just delete it from the keypad. Thanks for reporting and hope it helps:)
Eva Navrátilová
January 11, 2024
Perfect app except for a few bugs: - Sound is set to off, yet everytime I restart the app the sounds are playing. In the settings, they are still off... In the dark theme the sudoku board is much darker than the rest of the app, almost invisible - it's unplayable this way... Thank you for your response!
8 people found this review helpful
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Volcano Entertainment
January 11, 2024
We are aware of the bug and are working towards fixing it.

What’s new

Thank you for all your feedback, which will help us make a great game!
Enable edge-to-edge display
Improve user interface
Performance and stability improvements