Killer Sudoku by Sudoku.com

Content rating
Everyone
Screenshot image
Screenshot image
Screenshot image
Screenshot image
Screenshot image
Screenshot image
Screenshot image
Screenshot image
Screenshot image
Screenshot image
Screenshot image
Screenshot image
Screenshot image
Screenshot image
Screenshot image
Screenshot image
Screenshot image
Screenshot image
Screenshot image
Screenshot image
Screenshot image
Screenshot image
Screenshot image
Screenshot image

Morning or night, Killer Sudoku by Sudoku.com is ready to help your needs. This featured product from Easybrain carries the signature quality of APPzone. Check out the review at Puzzle, Logic, Sudoku, Casual, Single player, Abstract, Offline.

Complete Guide To Get Killer Sudoku by Sudoku.com

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 math 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
- Color 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
Killer Sudoku is a classic number puzzle for daily brain and logic training!
Updated on
Aug 28, 2026

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

199K reviews
Adamm1726
October 13, 2025
I was able to put up with the intrusive mid game ads most would be put off by. But now you NEED to click on them and go to the play store just to go back to the game? No exit button on the ad? is that even legal??? Absolutely not putting up with it. If you're interested in the type of game, there are better, less intrusive/harassing apps to play it on. Absolutely ridiculous.
72 people found this review helpful
Did you find this helpful?
Easybrain
October 13, 2025
Hi! Thank you for your feedback. We acknowledge that the rise in ads has affected your experience. Your input is valuable as we strive to improve the balance between gameplay and advertisements. If you face an unskippable ad or any issues, please share a screenshot via the "Help" section in the app. We’ll look into it.
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
88 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.
Catherine Lachance
August 3, 2026
The game was really fun for a long time. But the ads!! I understand this is how you make money, but one ad per game, or one if you close a game and come back to it later is reasonable. I am getting an ad every 2-4 moves. I set the phone down to watch the weather report, and I have to watch an ad after my next move. Too much. Uninstalling.
2 people found this review helpful
Did you find this helpful?
Easybrain
August 3, 2026
Hi! Thank you for sharing what changed your experience. We’re sorry to hear that the ad frequency made the game frustrating enough to uninstall. We’ll share your comments about ad frequency and timing with the team. We also offer an option to fully remove ads with a one-time payment in Settings, if you're interested. We're sad to see you go!

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!