Killer Sudoku by Sudoku.com review

Killer Sudoku by Sudoku.com is the best next step once classic grids start to feel routine. The rules are the same as classic sudoku, but every cell belongs to a cage marked by dotted lines, and the cage's numbers must add up to the sum in its corner without repeating. Easybrain notes that each row, column and 3x3 region always adds up to 45, a fact that becomes a key solving tool. The app has thousands of levels, daily challenges that win unique trophies, seasonal events with medals, and hints and notes when you get stuck. Easybrain says it designed the game to be approachable for all skill levels even though Killer is harder than classic. It has 219,000 ratings on the US App Store. The free version shows ads, the No Ads purchase is $14.99, and it covers Killer only. We compared documented features and published prices only.

Who it is for

Classic sudoku players who want a harder variant with daily challenges.

Price

Free with ads; Killer Sudoku No Ads is $14.99 on the US App Store.

Killer Sudoku No Ads $14.99
Quoted from the vendor pricing page on November 10, 2026.

Key features

• Killer Sudoku with cages and target sums
• Thousands of levels
• Daily challenges that win unique trophies
• Seasonal events with unique medals
• Hints and notes

Strengths and weaknesses

• Strength: Adds arithmetic logic to classic rules
• Strength: Built to be approachable for beginners
• Strength: Same daily trophy format as Sudoku.com
• Weakness: Ads in the free version
• Weakness: No Ads costs $14.99
• Weakness: Killer only, so classic play needs a second app

Key facts

• Developer: Easybrain
• Rules: Classic rules plus cages that add up to a sum
• Ad-free option: Killer Sudoku No Ads, $14.99
• App Store ratings: 219,000 on the US App Store

Where it ranks

Killer Sudoku by Sudoku.com is No. 7 in our Best Free Sudoku Games verdict.