Killer Sudoku by Sudoku.com

Contains adsIn-app purchases
4.5
200K reviews
10M+
Downloads
Content rating
PEGI 3
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About this game

Killer Sudoku will let you enjoy an exciting experience! Jump into the new Sudoku gameplay, solve tons of new challenging number puzzles, and train your brain! Install Killer Sudoku now for free!

This free Killer Sudoku number game comes from the developer of the world’s most downloaded classic Sudoku puzzle – Sudoku.com. Hence, be sure you’ll get a stellar experience, extra game quality, and a lot of joy with the Killer Sudoku puzzle.

Although Killer Sudoku may seem a bit harder than classic sudoku, we made it accessible for players of all skill levels. This number puzzle game comes with several difficulty levels – easy, medium, hard, and expert Killer Sudoku. This way, the Killer Sudoku puzzles are great for both beginners and advanced Sudoku solvers.

What is Killer Sudoku

Killer Sudoku is a true legend among all number games and puzzles. In a nutshell, it’s a perfect blend between a free sudoku puzzle game and a kakuro game.

This number puzzle goes by many names: Sumdoku, Addoku, Cross-sum, etc, but the rules are equally simple across the board. Your goal is to fill the grid with numbers like in classic Sudoku and also make sure that the sum of numbers in cages (areas separated by dotted lines) is equal to the number in the upper left corner of that cage.

How to play Killer Sudoku

✓ Fill all rows, columns, and 3x3 blocks with numbers 1-9 exactly like in classiс Sudoku
✓ Pay attention to the cages – groups of cells indicated by dotted lines.
✓ Make sure that the sum of numbers in each cage is equal to the number in the upper left corner of the cage.
✓ The specific rule of the Killer Sudoku puzzle is that the sum of all numbers of each 3x3 block, row, or column always equals 45.
✓ Numbers cannot repeat within cages, a single row, column, or 3x3 region.

Killer Sudoku features

✓ Complete free Killer Sudoku Daily Challenges to compete for awards
✓ Take part in Seasonal Killer Sudoku Events and win unique medals
✓ Challenge your logic figuring out your mistakes, or enable Auto-Check to see your mistakes
✓ Add notes if you’re not sure which number to place. Enjoy the experience of the classic paper-and-pen puzzle games.
✓ Use hints when you are stuck in a really hard number puzzle.

More Killer Sudoku features

- Statistics. Track your daily Killer Sudoku progress, best time, and other achievements
- Unlimited Undo. Made a mistake? No worries, undo it in one tap
- Colour themes. Select classic Light, Dark, or Sepia themes to design your own Killer Sudoku kingdom!
- Auto-save. If you get distracted and quit your Killer Sudoku game unfinished, we’ll save it for you so you can continue anytime.
- Eraser. Erase any mistakes you made in a number puzzle.

Killer Sudoku number puzzle is now available on the vast majority of phones and tablets. Install Killer Sudoku for free, train your brain, and have fun along the way!

Terms of Use:
https://easybrain.com/terms

Privacy Policy:
https://easybrain.com/privacy

DISCLOSURES AND YOUR CONSENT

By clicking on the “install” button you hereby consent that this app and any subsequent updates and upgrades of it (further “the App”) are installed on your device. You further confirm your understanding that the normal functioning of the App may from time to time include: (x) collecting of your data under our Privacy Policy to provide the features and functionality need to personalize your customer experience; (w) automatic communication of your device with our servers to support the functionality in order to provide you with the best customers experience; (z) affecting certain preferences and data stored on your device related to the functioning of the App. You may choose to uninstall the App at any time. For more details, please see our

EULA: https://easybrain.com/policy.html
Privacy Policy: https://easybrain.com/policy.html

In case of questions, please contact us by email: privacy@easybrain.com
Updated on
Apr 11, 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, Financial info and 3 others
This app may collect these data types
Location, Financial info and 3 others
Data is encrypted in transit
You can request that data be deleted

Ratings and reviews

4.5
179K reviews
one4all
May 2, 2025
really good and challenging, but there needs to be an option to remove the clock and score to make it harder for players that want maximum difficulty. When you get the right answer the block shows points scored and there's also the score near the top. please give the option to remove these.
Did you find this helpful?
Easybrain
April 13, 2025
HI! Thanks for your honest feedback. We're sorry to hear the experience didn’t meet your expectations. We’ll take your comments into account as we work on improving the balance between gameplay and ads.
Beth Madigan
March 24, 2025
I really enjoy Killer Sudoku, but I wish I could see the score of the game as I finish. The screen with my score disappears in the blink of an eye and the current score does not show anywhere in the summaries. ☹️☹️. difficult to keep track of how my games are going when I can only see the very best score of the day, week, month and not the rest of my play
9 people found this review helpful
Did you find this helpful?
Easybrain
May 2, 2025
Hi! We appreciate your feedback on tracking scores and understand your desire for clearer summaries. Your thoughts are valuable to us! Please contact us via the "Help" section in the app with any suggestions.
Graham
October 4, 2024
The game is generally good. But ONLY if you pay for the ad-free version. When I first started playing, the easier levels would have an advert before and after, and the Expert level would have one or two in the middle. Then it became one every three minutes but it's now one every 2+ minutes. 7 adverts for an 11 minute Expert game is beyond a joke.
67 people found this review helpful
Did you find this helpful?
Easybrain
October 4, 2024
Hi Graham! Thank you for your feedback. We're glad you enjoyed the game, but we understand your frustration with the frequency of ads. Ads support free apps, but we agree that too many can disrupt the experience. We appreciate your thoughts, and hopefully, we can improve the balance between ads and gameplay in the future.

What’s new


We hope you enjoy playing Killer Sudoku. We read all your reviews carefully to make the game even better for you. Please leave your feedback on why you love this game and what you'd like to improve. Keep your mind active with Killer Sudoku!