Killer Sudoku by Sudoku.com

Killer Sudoku by Sudoku.com

Math crossword & number puzzle

217K ratings
2719 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 #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 about Killer Sudoku by Sudoku.com

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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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Subscriptions & In-App Purchases

$14.99

Killer Sudoku No Ads

Enjoy Killer Sudoku puzzles without ads

User reviews

More and more ads

It’s a good app, except that you keep getting interrupted by ads. I’ve used this app for a long time, so I remember that it wasn’t so bad in the past, but over time there are just more and more ads.

Full of ads

Full of ads, and one of them killed my tabs in chrome which I can’t get back. So I deleted the app.

Intrusive ADS

I genuinely love this app but being interrupted in the middle of a puzzle makes me want to stop playing immediately. I would rather have ads before or after finishing a puzzle, in the middle is so incredibly aggravating. I enjoyed playing this and working through past and present daily challenges and tournaments but when this change to ads happened months ago I stopped playing. Opened up the app recently and in less than 2 minutes of starting the daily puzzle it gets interrupted with an ad. I let the ad play out, finished the puzzle, and uninstalled. I hardly ever leave App Store reviews but this baffles me to the point of writing about it
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Too many ads

Great game. Super fun. But there’s too many ads. I don’t mind an ad here and there, But this app just has way too many ads. When i make a third mistake, I have have to watch a ad for 1 min or else I’ll lose my progress, then as soon as I watch it, Ill put the right number and It goes straight to another ad as if I didn’t just watch a 1 min app 20 seconds before. Then if I spend another 1 min concentrating and put in the right number, it’ll go straight to another ad. When you pause the game and go back, it makes you watch another ad. I can keep giving examples of how you can trigger ads…. It’s awfully annoying. The game is good though.
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Fun but bloated with ads

The game is enjoyable and offers a fun challenge. But it is bloated with ads, with constant interruptions for advertisements.

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.