Killer Sudoku by Sudoku.com

Contains adsIn-app purchases
4.5
192K reviews
10M+
Downloads
Content rating
Everyone
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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 app comes from the developer of the world’s most downloaded classic Sudoku puzzle – Sudoku.com. So a stellar experience, extra game quality, and endless fun are guaranteed.

Whether you’re a fan of classic Sudoku or just looking for a number game or maths puzzle for a great time and mental workout, free Killer Sudoku is here for you.

Although Killer Sudoku seems 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, Killer Sudoku puzzles are great for both beginners and advanced Sudoku solvers. We have no doubt you’ll become a Killer Sudoku master in no time!

What is Killer Sudoku

Killer Sudoku is a true legend among number games and puzzles. In a nutshell, it’s a perfect blend of those fave brain-twisters Sudoku and Kakuro. Absolutely free!

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 while making sure the sum of numbers in the cages (areas separated by dotted lines) is equal to the number in the upper left corner of that cage. Still sounds complicated? Let’s review the Killer Sudoku rules in detail.

How to play Killer Sudoku

✓ Fill all rows, columns, and 3x3 blocks with numbers 1-9 exactly like in classic Sudoku
✓ Pay attention to the cages – groups of cells indicated by dotted lines.
✓ Make sure the sum of numbers in each cage is equal to the number in the upper left corner of the cage.
✓ The basic rule of Killer Sudoku is that the sum of all numbers in 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 where you went wrong, 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 stuck on a really hard number puzzle. Don’t bother if you’re an experienced Killer Sudoku solver.

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 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
Updated on
7 Oct 2024

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
172K reviews
Ela Piskorski
8 November 2024
I've been playing this version of Killer Sudoku for a long time. Previously, I always had scoring turned off in settings. It seems that is no longer possible. I have turned off animated scoring (which was INCREDIBLY distracting). Having the score continuously change on the top of the screen is still very distracting. Please return the ability to turn this feature off. I will be looking for a new killer sudoku app in which I am able to control this.
2 people found this review helpful
Did you find this helpful?
Easybrain
8 November 2024
Hi Ela! Thank you for sharing your experience. We understand how the scoring feature can be distracting. Our main guideline is our players' opinions. We constantly test various innovations, and only those features most in demand among our players become part of the game for everyone. We'll certainly keep your feedback in mind. 💚
Betsy Turmelle
11 November 2024
MULTIPLE ADS PER GAME NOW! Recently got MUCH worse! Now one ad at the end of every game, one at the beginning of the very next game making the ads BACK-TO-BACK, then multiple ads during the game. And some ads are quite lengthy with no end-it-somewhat-early option to click on. MY ADVICE: Unless you enjoy watching ads with an occasional game interrupting your viewing pleasure, then look for a more consumer-friendly version. Sadly, that's where I'm headed after years of loyalty to this company.
1 person found this review helpful
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Easybrain
11 November 2024
Hi Betsy. Thank you for sharing your experience. We understand how multiple ads can disrupt gameplay, and we’re continually exploring ways to improve this balance for a smoother experience. Your loyalty to the game over the years truly means a lot to us, and we hope to create a better experience in the future.
David Moore
8 November 2024
Bring back option to hide scoring. It's obvious when I get a cell correct. Takes the challenge out of playing knowing a mistake can be made. Update 8 Nov 2024 The app developers response to my review makes it sound like it wasn't a feature. It was 100% a feature hide to the score. I've been using this app for years and have recently stopped because of an odd decision to remove a useful feature. Not sure what data drove that decision.
1 person found this review helpful
Did you find this helpful?
Easybrain
9 November 2024
Hi David! Thank you for your feedback. We value your continued support and recognize the need for options that elevate the game's challenge. We'll keep your comments about scoring in mind as we strive to enhance the player experience based on your insights.

What's new


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