Killer Sudoku by Sudoku.com

Killer Sudoku by Sudoku.com

Math crossword & number puzzle

217K ratings
2682 reviews
Free
In-App PurchasesWith Ads

Details

  • Released
  • Updated
  • August 6, 2020
  • August 27, 2026

Features

Killer Sudoku by Sudoku.com video #1 for iPhone
Killer Sudoku by Sudoku.com screenshot #2 for iPhone
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Killer Sudoku by Sudoku.com screenshot #7 for iPhone
Killer Sudoku by Sudoku.com screenshot #8 for iPhone
Killer Sudoku by Sudoku.com screenshot #9 for iPhone
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About

Engage in a challenging math crossword and number puzzle experience. Solve thousands of Killer Sudoku puzzles with enhanced gameplay, daily challenges, and seasonal events. Train your brain and become a sudoku master with helpful hints and notes.

Killer Sudoku puzzles
Thousands of levels
Daily challenges
Seasonal events
Hints and notes
Brain training gameplay
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What users say

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What's New in Killer Sudoku by Sudoku.com

4.5.0

August 27, 2026

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

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In-App Purchases

$14.99

Killer Sudoku No Ads

Enjoy Killer Sudoku puzzles without ads

User reviews

Fun killed by long scam adverts

I used to enjoy this relaxing game when the adverts were to be trusted & there was a simple exit. The only time that you had to watch the whole advert was a penalty for using all three lives. Even then the adverts were a max of 30 seconds with a one tap exit.
It seems the game has sold out to scammers with illegal false associations logos of reputable companies. They will really chase you if you given enough information DON’T .
20 seconds is enough to decide if you are interested and we don’t need to be chased around the screen and three or four clicks on false X exits .
i’m looking for an alternative and suggest you do to avoid a scam or worse.
If you are a legit advertiser then your brand is devalued by these scammers.
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Ad riddled all of a sudden

I’ve played this app for years, all of a sudden with a new update it’s full of updates and annoying as hell. I just deleted it.

Great game, BUT….

I have returned to doing killer sudoku but have been very disappointed by the amount of adverts that pop up when you place the correct number in the grid! I love doing the expert level, but am having serious doubts as to whether i can use this app any more. I wont be the only one thinking this way. You will lose people unless you address this issue soon.😢
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Holy ads!

The ads have gotten exponentially worse recently. It is literally every few minutes to every time you place a number on the board. I understand ads make money, but this is insane.

Expert ads

I play on expert which makes it take a while before I can find another number to put in. :T that means every time I put in a new number I get an ad. I have to remember what I was doing so I can’t even just watch tv like normal when the ad is playing

Developer apps

User experience

🐞

Reported Bugs

5 issues

Incorrect puzzle solutions

Bug

Scoring and stats issues

Bug

Screen orientation problems

Bug

Game freezing and crashing

Bug

Unresponsive controls

Bug

Requested Features

6 requests

Option to toggle number combinations

Feature

Ability to lock correct numbers

Feature

Improved hint system

Feature

Customizable font and color options

Feature

Progress sync between devices

Feature

Difficulty level adjustments

Feature

FAQ

What is Killer Sudoku?

Killer Sudoku is a math crossword and number puzzle that combines elements of classic Sudoku with additional cage sum rules. Players must fill rows, columns, and 3x3 regions with numbers, ensuring each cell is part of a cage whose numbers add up to a specified sum. Numbers cannot repeat within cages, rows, columns, or 3x3 regions.

How do I play Killer Sudoku?

Fill all rows, columns, and 3x3 regions with numbers 1-9, just like classic Sudoku. Additionally, each cell belongs to a cage indicated by dotted lines. The numbers within each cage must add up to the sum shown in the upper left corner of the cage. Numbers cannot repeat within cages, rows, columns, or 3x3 regions.

Is this app free to play?

The app is free to download and play, offering a vast number of puzzles and gameplay features. It also includes in-app purchases and advertisements, which can enhance the user experience or provide additional content.

What makes this Killer Sudoku app different?

This Killer Sudoku experience is designed for both beginners and advanced players with enhanced gameplay that makes rules easy to follow. It offers thousands of levels, daily challenges for unique trophies, and seasonal events for special medals, all from a developer known for Sudoku.com.

What if I get stuck on a puzzle?

The app provides helpful hints and notes to guide you when you encounter difficulties. These tools are designed to assist players of all skill levels in progressing through the puzzles and learning the game mechanics.