Last updated on January 15th, 2026 at 12:39 am
Killer Sudoku by Sudoku.com – Board Game Review
Killer Sudoku by Sudoku.com is a Board/Puzzle/Entertainment game from Easybrain Ltd, first launched in 17th April 2020.
It’s rated 12+ and currently has 208,296+ ratings on the App Store.
What Makes Killer Sudoku by Sudoku.com Stand Out
Enjoy an engaging Killer Sudoku experience! Jump into enhanced gameplay, solve tons of puzzles, train your brain, and have fun!
Discover the new brain-training puzzle from the developer of Sudoku.com!
Killer Sudoku by Sudoku.com is great for both beginners and advanced players. Although Killer Sudoku is harder than classic sudoku, we made it accessible for players of all skill levels. With its enhanced gameplay, it's easy to follow the game rules and become a sudoku master in no time. Explore Killer Sudoku and discover a refreshing take on the classic paper-and-pencil sudoku puzzle.
What you get:
- Killer Sudoku puzzles to expand your sudoku experience.
- Thousands of levels to solve.
- Daily challenges to win unique trophies.
- Seasonal events to get unique medals.
- Hints and notes to guide you when you get stuck.
- Tons of gameplay to challenge your brain.
- New game from a top developer!
How to play:
- Fill all rows, columns, and 3×3 regions with numbers exactly like classic sudoku.
- Every cell is part of a cage, indicated by dotted lines.
- Make sure the cells can be added up to the sum in the upper left corner of the cage.
- The sum of all numbers of each 3×3 region, row or column always equals to 45.
- Numbers cannot repeat within cages, a single row, column, or 3×3 region.
Dive into the world of Killer Sudoku! Play anywhere, anytime!
This Board game offers engaging gameplay and regular updates for mobile players.
Player Feedback
As a newer release, Killer Sudoku by Sudoku.com is building its player community. Early feedback suggests .
Recent Updates & Development
Latest Update: 16th October 2025
Recent improvements include:
- 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!
Download & Availability
Killer Sudoku by Sudoku.com is available through the official App Store for iOS devices.
Get Killer Sudoku by Sudoku.com on App Store
Requirements: Requires iPhone 5s / iPad Air / iPad Air (Cellular) / iPad Mini 2 (Retina) / iPad Mini 2 (Retina, Cellular) / iPhone 6 / iPhone 6 Plus / iPad Air 2 / iPad Air 2 (Cellular) / iPad Mini 3 or later.
Compatible with iPhone and iPad devices.
Player Experience Highlights
Community Insight:
Fun game. We find the game excellent for memory retention. At the same time, it tickles our fancy. It is free, wireless, and there is no extra cost. Exactly, as other games claim. This game is as discribed.
There's no methods to save any of our current progress of any games of yours,really love those amazing games that you made,but it's better if you cloud just let us register a account of all your games or log in with apple account or something else,the icloud doesn't saved the progress,losing all the data when we reinstall it even on the same device. We really hope that we cloud get a response from you guys!!!!! The end,really big fan of the great games you guys made.
We love this game. Its our go to. But the ads are relentless. Even when we download one of the recommended games or make a purchase, new ones are immediately recommended. It is continuous and steals our joy.
We love this app, the only thing we would ask the developers to do if possible is to make a difficulty level in between hard and expert, it seems like there is an exponential increase in difficulty between hard and expert. If that could be done this app would be just about perfect.
Good and challenging brain game to keep your mind sharp. Great with ads, but its worth paying the one time fee to remove ads permanently. Overall 10/10 play every day.
Its a fun game but ALL the ads drive us crazy.
Why does this app make our phone heat up like crazy when we play it? After around 20 minutes of the app being open, one section of our phone screen becomes burning hot to the touch. It scares us a little, honestly, cause we dont have an old phone or anything, we have the iPhone 16. Beyond that, we actually really like the app. The expert mode is best, since going from no numbers to full completion isnt possible with normal sudoku and feels much more satisfying.
We would have given a 5 star but we hate the ads.
Super fun and addicting games, but ads are too excessive.
We like this game but wondered why it was called Killer Sudoku. What makes it killer? Then we realized that it kills your battery like no other app. It is unbelievable how quickly it can drain the battery on your phone. If you arent careful and leave this app open in the background you will be unhappy when you find out your battery is dead. We think this would be an excellent app for Apple to do battery life with. Seriously, this app must peg the CPU and every other sub-system on the device. It might be using some subsystems that Apple doesnt even know about. It is impressive how much battery it can chew up considering there are no fancy animations or graphics. Anyway, it is a fun game but seriously, developers, profile what is going on with your code.
The ads come on just when Im in a groove then boom forgot where we were at lol.
Please include a super expert level.
We like everything BUT the excessive commercial interruptions. They break our concentration.
Spend more time clearing ads than takes to finish puzzle.
Love to play but why so many ads? Get tired of seeing them.
We enjoy the Events and Challenges and prefer the Expert level puzzles to keep our math skills sharp. Lately we never get Expert level puzzles, only Easy and Medium and occasionally Hard. This is too easy for us and Im getting bored with this. The only way for us to see Expert level is to manually start an Expert puzzle but we dont see them in the Challenges. This is a new development as it did not used to be this way. We dont know what changed but please restore the random level puzzles to also include Expert.
We would love this, but it tries our patience while enduring 7 ads while playing a 10 minute game, many lasting 15 seconds with no outs! Ridiculous.
We love to play this game, but there are too many interruptions with popups. Very discouraging.
Its a great game, if it didnt have commercials every other move.
We have been playing this game for an incredibly long time and while its incredibly fun and a better alternative to staring at social media all day, its become borderline unplayable with the amount of ads that pop up. On top of the cycling ad bar at the bottom, after every two minutes/10 number placements (whichever comes first) an ad pops up. Playing in expert mode is nearly impossible at this point, because the second you fill in a cell youre immediately sent to an ad. While we love the concept, its becoming less and less fun to play.
Lower rating because of the way the ads work. Have no problem with ads as it is free after all, but having them popup while playing is super annoying. Its almost as if you get in a roll and it rewards you with an ad. Dumb. Save them for when we slow down and/or finish the puzzle. Otherwise its a great app.
We love killer sudoku and the challenge it provides. However, the ads in this game are intolerable. We understand ads are necessary for free game play, and Im fine with ads before or after each game, but there shouldnt be ads right in the middle of gameplay. Every time we get into a rhythm we are rudely interrupted by an annoying ad. We will be deleting this app and finding a better one.
Its super fun and challenging Ive gotten to expert level in under 10 minutes no mistakes or hints. But we cannot stand the ADs. They are every free moves and they cost 14.99 to remove? 14.99. Thats crazy expensive for a sudoku game. Like common.
You have to sit through ads mid-game every 5 minutes. Theres better options out there. We prefer Killer Sudoku by Oakever Games.
Would give it 5 stars but this app continues to overheat and drain our battery.
Too many ads that take too long to get out of.
We love the game but the interruptions are annoying and make us stop playing.
We love being able to play killer sudoku and that the game works without data/service. But, the ad situation is out of control and we think (?) it causes this app to drain our battery super quickly (way more than NYT crosswords, etc). 3 ads in 1 game is crazy.
They give you an ad every 2 to 3 times you solve a cell, which entirely sucks out the satisfaction of solving them, the whole point of sudoku. In addition, when you solved two cells at once, very common in killer sudoku, you are interrupted between entering these two values. Kills any flow the game could possibly have, making this a worthless app unless youre willing to pay 15 dollars to remove them. Thats a lot for sudoku, we recommend you look elsewhere.
Ive had this app for years now and we love it but unfortunately its just unplayable now. After every 3 numbers we guess, we get an ad. App was better before when it was ad free. Unplayable now, wouldnt recommend to anyone.
Ads are ridiculous, 4 pop up ads in few minutes it takes to play a game. Honestly we love the game, but Ill be damned if Im going to buy a pergola in the midst of playing a game. And we refuse to pay 9.99 for no ads. Give us an ad before the game starts and after it ends, not 4 in the middle of the game. We just deleted the game, so so, sick of the interruptions. Unless you like interruptions in the middle of playing a single game, dont download.
This is a fun game with all of the daily challenges, events, etc, but it is almost entirely unbearable to play with ads running literally after every 5 moves or so. Quite ridiculous! And $14.99 to remove ads? Cmon, there are other just as fun sudoku games that dont try to take your first born child just to have an enjoyable game experience.
We love sudoku and this is definitely easier than normal sudoku, but the ads are absolutely ridiculous. There is no reason we should have to watch four ads in one game. It makes us not want to play this game, we can find a better one with less ads.
We love this game, EXCEPT there are way too many ads, we expect ads at the end of a puzzle, but not in while working the puzzle. We are so frustrated. We work at finding a number combination and put a number in and up pops an ad. It is not a fun game any more.
When you actually get to play, this is a great game, keeps your mind activewhen you are playing. BUT, about every other number you place, you get a reward of being forced to watch an ad, gee thanks.. Its gotten to where we spend more time with the fn ads than getting to play the game. It didnt used to be this way. If this continues, we will delete the game. Its just not that much fun anymore.
We bought the no-ads add-on which has been awesome. Literally zero ads in the game! Cost less than a nice cheeseburger meal. However, we are still unable to get the gold medal in a first try challenge tournament. We use the hint button to breeze through all the levels (no ads) and complete the tournament in 8 minutes. We still come in 4th and get a silver medal. This last time we started as soon as the tournament was available. There is no way you are playing against real people. It is all programmed. The animal names are cute, but they are not aliases of real players. Enjoy the puzzles and the puzzle pictures, but dont expect to receive any gold medals. We were just up 700k points in a points tournament and with 5 hours to go we wake up in the morning to check just to see that we lost. Totally rigged.
3 or more ads for one puzzle. Too many.
Good game but way way to many ads.
We love playing this game, especially at night before sleeping. While the game is in night mode, the ads are so bright and often any attempt at closing them out sends us to the website (another bright screen). This blinds us and ruins the experience. Why have a dark mode if youre going to blind us with ads on the bottom and every two minutes while we play.
Killer sudoku is challenging without being too hard.
We play Expert Killer Sudoku almost everyday as part of our way to keep us sharp on math and pattern solving it makes us feel happy when we solve the puzzles.
We would like to finish a game before we have to see ads. Our game is interrupted 3-4-5 times or more. We would prefer ads at beginning and end of the games.
One of the best little games we have ever played! We absolutely abhor math, makes us sick to the stomach, but oddly we find this game fast paced, fun, and relaxing! Please dont share with anyone that has tried to make us understand numbers LOL.
Super fun. Brushes up on our math skills which we were never good at in the first place. Keeps our mind active and sharp.
There are flawed games coming way more often. It started occasionally a few months ago but now its almost every week that the number sequences are not correct! Who is creating your sudoku puzzles??? Is it AI? Please address your app employees because they are not doing there jobs! Thank you.
Enjoying the games on this app. But with first time challenge, its very easy to click the wrong button and get back to the beginning and erase what Ive done. Is there any way to have a chance to get back to our previous level.
Love the daily problem and different difficulty levels. Great UI and lots of options in settings to increase the ease of play.
We will be removing this from our iPad. The advertisements have become so long, with no workaround, the game has just become a source of frustration. Too bad, it was great.
This game is really fun but theres a bug where the solution has us putting the same number more than once in the same row/column/block/equation. Please fix this it makes the game not fun to play.
The game is stuck after watching the ads. Frozen like the movie.
User feedback from Apple App Store
App Details
- Version: 4.2.0
- Size: 188.04 MB
- iOS: 15.0 or later
- Languages: AR, EN, FR, DE, HI, IT, JA, KO, PL, PT, RU, ZH, ES, TH, ZH, TR, VI
- Content Advisory: Infrequent/Mild Sexual Content and Nudity
- Developer: Easybrain Ltd
Last updated: 16th October 2025 | Genre: Board, Puzzle | Developer: Easybrain Ltd