Killer Sudoku

384 reviews
Content rating
PEGI 3
10K+
Downloads
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About this game

Presented by Cracking The Cryptic, the most popular Sudoku channel, comes a new game based on our most requested variant: Killer Sudoku.

In Killer Sudoku, every puzzle features cages that tell you the sum of the numbers inside. This extra information leads to beautiful logic that you will master as you progress through our handmade puzzles. The puzzles in Killer Sudoku are created by Simon and Mark as well as a large number of guest creators. Fans of Cracking the Cryptic's channel will recognize many of these authors as some of the most talented creators working today!

As with our other games (‘Classic Sudoku’, ‘Sandwich Sudoku’, ‘Chess Sudoku’, 'Thermo Sudoku' and 'Miracle Sudoku'), Simon Anthony and Mark Goodliffe (the hosts of Cracking The Cryptic) have written all the hints for the puzzles. So you know that every puzzle has been play-tested by a human being to ensure that each sudoku is interesting and fun to solve.

In Cracking The Cryptic’s games, players start with zero stars and earn stars by solving puzzles. The more puzzles you solve, the more stars you earn and the more puzzles you get to play. Only the most dedicated (and cleverest) sudoku players will finish all the puzzles. Of course the difficulty is carefully calibrated to ensure lots of puzzles at every level (from easy through to extreme). Anyone familiar with their channel will know that Simon and Mark take pride in teaching viewers to be better solvers and, in these games, they always craft the puzzles with the mindset of trying to help solvers improve their skills.

Mark and Simon have both represented the UK many times at the World Sudoku Championship and you can find more of their puzzles (and lots of others) on the internet’s biggest sudoku channel Cracking The Cryptic.

Features:
100 beautiful puzzles
15 bonus beginner puzzles
Hints crafted by Simon and Mark!
Handcrafted Killer Sudoku puzzles by the most popular Sudoku channel!
Updated on
May 5, 2026
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Ratings and reviews

355 reviews
Andy
February 4, 2021
Some of the hints are wrong or very hard to understand. In particular #22 Hint 1...doesnt seem to make sense to me. Still no idea why all the puzzles aren't in app rather than several. Each type could be an expansion pack then. Agree with other reviewers... Balance between fun and difficulty is not quite there. All puzzles should be open from start... Found some that were mega difficult early on and some that were far easier later.
6 people found this review helpful
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Mark Holden
December 23, 2020
Good puzzles let down by readability of the grid. While I don't doubt the quality of the puzzles, the readability of the grid is a much higher challenge for me. The size of the characters used for cage totals is too small for me to see clearly regardless of the brightness or colour scheme. The higher contrast schemes wash out the grid lines to make them invisible. Turning up the brightness of the screen helps somewhat but that causes eye strain which means I can only play for a few minutes
9 people found this review helpful
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Teddy Sudol
March 15, 2025
Great selection of puzzles, good UI, good configuration options. Overall very fun! I'm taking away one star because the pre-written hints are frequently wrong and/or confusing. Hint #1 of Puzzle #22 "45s" is a great example: the third part (about where 8 goes in r1) directly conflicts with the previous part of the hint, and the final part is downright impossible. Of course, this isn't a problem if you never need hints, but some of us do!
3 people found this review helpful
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What’s new

Compatibility updates