Killer Sudoku - Sudoku Puzzle

Contains adsIn-app purchases
16.7K reviews
Content rating
Everyone
1M+
Downloads
Content rating
Everyone
Learn more
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About this game

Enjoy the free Killer Sudoku puzzle games for both beginners and advanced Sudoku lovers! Download and start the daily challenge for free!

Thousands of killer sudoku puzzles here for you to solve. Come to play this new killer sudoku game, and train your brain. Have fun!

[New] Dark Theme. Perfect to play before bad!
[New] Color Theme. Playing games could be colorful!
[New] Casual Mode. 4*4 and 6*6 boards bring you more fun!

Killer Sudoku Free is a logical puzzle number game & brain game. To complete a puzzle, like the classic sudoku game, you can fill the grid with numbers; unlike the classic sudoku puzzle, you have to make sure that the sum of numbers in each cage (areas surrounded by the dotted lines) is equal to the number in the upper left corner of the cage.

If you are interested in playing number games or math puzzle games, this Killer Sudoku is exactly for you! If you'd ever played number games, such as Sumdoku, Sumoku, Addoku or Cross sum, come to try this one, too! It is an amazing combination of a sudoku puzzle, a KenKen and a Kakuro puzzle game.

Killer Sudoku may be a little bit harder than a classic sudoku puzzle game, no worries! We offer several balanced difficulty levels for beginners and advanced players! The game has the function to add or remove notes during gameplay. Did you make a mistake at the beginning? No worries, there are undo and hint functions! Get it back fast!

How to play:

1. Place numbers 1-9 into each grid cell exactly like in a classic Sudoku puzzle;
2. Different cages - groups of grid cells indicated by dotted lines;
3. The sum of all numbers in each cage should be equal to the number in the upper left corner;
4. The sum of all numbers of each 3x3 block, row, or column always equals 45;
5. Each cage, row, column, or 3x3 block cannot have the repeated numbers.

Features:

- Turn on the note mode to take notes like solving puzzles on a piece of paper. The memo is automatically updated while you fill in the cell.
- Find your mistakes and challenge yourself or use auto-check to see your mistakes in real-time
- Complete daily challenges and earn special trophies!
- Use free hints when you are stuck.
- Thousands of killer sudoku puzzle games

More functions and highlights:

✓ Statistics. Track your killer sudoku progress.
✓ Unlimited Undo. One tap to remove the mistake.
✓ Autosave. If you leave Sudoku incomplete, it will be saved. Keep playing anytime.
✓ Eraser. Eliminate all of the mistakes if you made any.
✓ Sharing functions. You can share this sudoku game with your friends via Facebook, Twitter, etc.
✓ Four perfectly balanced difficulty levels: Easy, Medium, Hard, and Expert.

Train your brain anytime and anywhere and keep your mind sharp in this Killer Sudoku puzzle game. With its easy control, intuitive interface, and perfect selection of different levels, this killer sudoku app will help you to enhance your logical ability and learn more Sudoku skills. Come and try it out! Challenge yourself how quickly you can solve problems and improve your memory!

We always carefully check all reviews. Please feel free to leave your ideas, feedback, suggestions, or any questions about Killer Sudoku for further improvements! We are always here for you. Thank you and have fun with Killer Sudoku, Sudoku Puzzle!

Privacy policy: https://killer-sudoku.gurugame.ai/policy.html
Terms of use: https://killer-sudoku.gurugame.ai/termsofservice.html
Killer Sudoku Puzzles - train your brain with this number game at any time!
Updated on
Sep 4, 2026
Available on
Android, Windows*
*Powered by Intel® technology
Events & offers

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.
  • No data shared with third parties
    Learn more about how developers declare sharing
  • This app may collect these data types
    Personal info, App activity and 2 others
  • Data isn’t encrypted
  • You can request that data be deleted

Ratings and reviews

15K reviews
Gabriel “AnimeFan94” Martinez
August 28, 2021
Decent game, but they're higher than America's fuel prices if they think I, or any sane person, would pay $15 for no ads. Thankfully, I have an ad blocker, so I never get ads. I'd pay a max of like $4 to remove ads, but $15!? From what I'm reading in the reviews, the ads are spammed hard, to frustrate you enough to pay the high price for an ad-free experience.
32 people found this review helpful
Did you find this helpful?
Guru Puzzle Game
August 30, 2021
Hi, thank you for your kind support. We are very sorry for such inconvenience. We will continue to update our app to make it better and better. You can reach us at killersudoku@fungame.studio with any other feedback. Thank you very much for your kind support! :-) - Zora
Christine Brown
August 4, 2021
App was fine. Overall pretty clean, though difficult to see when the dash lines crossed the heavy dark lines. As a game I didn't really enjoy it. It's called "killer sudoku" but I found it to be much easier than regular sudoku. Instead of 3 "hints" (being 1-9 horizontally, vertically, and in each large box), you have a 4th "hint" with the small dashed areas. Seemed like a giveaway that you wouldn't necessarily have otherwise.
Did you find this helpful?
Guru Puzzle Game
August 4, 2021
Hi, thank you for your feedback! We offer the color theme now, you can click the "brush" button on the top right corner of the main page and click the color one to change it, which would make the game better for you. We will continue to improve to make the game better and better. If anything else, please reach us at killersudoku@fungame.studio. :-)
Melanie Johnson
May 2, 2022
Can't play previous daily games like before. Ads are crazy, which I under stand they are needed for the developer to make money. But they pop up in the middle of games (opening play store). Also I play a level in an event and finish, watch an ad, and I have to replay the level sometimes. I'm over it. There's better killer sudoku games where the developers listen instead of make excuses.
16 people found this review helpful
Did you find this helpful?
Guru Puzzle Game
May 3, 2022
Hi, sorry for such inconvenience! As a startup, we have to survive by integrating with ads.We have forwarded your feedback about the "Daily Challenge" and "Progress Lost caused by Ads" to our development team and product team and will continue to update our game. You can reach us at killersudoku@fungame.studio with anything else. Thanks! - Fiona

What’s new

Dear Killer Sudoku players,
This update includes bug fixes and UI optimization.
Share the game with your friends, thank you for choosing Killer Sudoku.