Killer Sudoku by Sudoku.com

77%
Game Brain Score Based on 10,000 reviews
  • monetization
  • gameplay
  • music
Killer Sudoku by Sudoku.com Game Cover
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"Killer Sudoku by Sudoku.com" is a brain-training puzzle game, offering thousands of levels and daily challenges for both beginners and advanced players. The game provides a refreshing twist on classic Sudoku, with enhanced gameplay and features like hints, notes, and seasonal events. Fill all rows, columns, and 3x3 regions with numbers while enjoying its refreshing take on the classic puzzle.

  • iPad
  • iPhone
  • Phone
  • Android
  • Mobile Platform
  • Tablet
Genres & TagsPlay Modes

Reviews

77%
Audience ScoreBased on 10,000 reviews
gameplay28 positive mentions
monetization3,356 negative mentions
  • The game offers a fun twist on traditional Sudoku with the addition of math challenges.
  • The interface is user-friendly and allows for easy note-taking.
  • The game provides a range of difficulty levels, making it accessible for both beginners and experienced players.
  • Ads frequently interrupt gameplay, including mid-game ads that disrupt concentration.
  • The game can sometimes have unsolvable puzzles, leading to frustration.
  • The number of mistakes allowed is limited to three, which can be frustrating for players who accidentally click the wrong number.
  • monetization3,418 mentions

    The monetization aspect of the game has received overwhelmingly negative feedback from users, primarily due to the intrusive nature of ads. Many players express frustration over ads that interrupt gameplay, often appearing multiple times during a single game session, which disrupts concentration and enjoyment. While some users acknowledge the necessity of ads in free games, the frequency and placement—especially mid-game—are seen as excessive and detrimental to the overall experience, leading to a significant number of uninstalls and requests for a paid ad-free version.

    • “A really great game, I love playing it and lose count of hours, and everything is right with this game, no ads whatsoever, it's amazing.”
    • “No ads popping up mid puzzle, good in my book.”
    • “I enjoy this game enough that I got the no ads option.”
    • “The game would be good, but the ads are so intrusive as to make it frustrating to play.”
    • “I understand the need for ads, but once every 2-3 minutes, plus on opening the app, plus on choosing a level, plus on completing a level, it's just annoying now.”
    • “I used to love this game but the ads have rendered it unplayable.”
  • gameplay118 mentions

    The gameplay is generally well-received, with many players appreciating its mechanics and challenge, particularly in the context of sudoku. However, a significant number of users express frustration over intrusive ads that interrupt gameplay, often occurring in the middle of puzzles, which detracts from the overall experience. While some players are willing to tolerate ads between levels, the frequency and timing of these interruptions have led to a negative impact on gameplay enjoyment.

    • “The game is very fun and has some very interesting mechanics to it.”
    • “Been playing this near-daily for the last year or so, solid set of sudoku puzzles with some interesting additional mechanics.”
    • “Great gameplay and I expect ads with a free game but ads randomly and frequently in the middle of a puzzle is not cool.”
    • “The increase in ads has ruined the gameplay; there are too many ads in the middle of the game session.”
    • “Especially since this is a timed game involving numbers and logical deduction, ads disrupting the gameplay does ruin the experience.”
    • “I understand the need for ads, but during gameplay in a timed game is infuriating.”
  • music37 mentions

    The music aspect of the game is heavily criticized due to intrusive ads that interrupt players' personal music, often causing disconnections and volume issues. Users express frustration over the inability to mute or control ad sounds, which disrupts their gaming experience and concentration. While the game itself is enjoyable, the overwhelming presence of loud, unskippable ads significantly detracts from the overall enjoyment, especially for those who prefer to listen to their own music while playing.

    • “Used to be fun playing this on the bus while listening to music.”
    • “It's great, except for the ads that knock out the music I'm listening to (not all of them).”
    • “I do not like when the ads mute the music that is playing, but it is a good game that functions well.”
    • “But every time I go to Spotify and turn music on, and go back to the game, the music stops and my headphones disconnect and reconnect every second. I don't know why, because it only happens with that app, and I don't know if there is any way to turn it off (I tried turning sound in the app off).”
    • “Ads are far too intrusive, especially when the ads pause your music.”
    • “You're stuck in an infinite loop where if you minimize the game to resume your music, the game is paused, so when you return, it plays another video ad which pauses your music again.”
  • stability35 mentions

    Overall, the stability of the app is mixed, with many users reporting frequent freezing and crashing issues, particularly related to ads and transitions between game modes. While some players have experienced a smooth and bug-free experience, others have noted significant glitches that disrupt gameplay, especially after recent updates. The presence of intrusive ads further complicates the stability, leading to frustration among users.

    • “The app is extremely well done otherwise - very responsive, clean UI, and seemingly bug free.”
    • “No glitches in the game.”
    • “No glitches, great update, and helps to learn and concentration.”
    • “I've had the issue another review mentioned where switching between marking mode and notes mode seems a bit buggy.”
    • “But recently, the app has become buggy - it keeps coming up with impossible solutions or offers me fields I have already played.”
    • “Since the update, the game freezes then crashes and I have to start whatever level I'm on all over again.”
  • graphics30 mentions

    Overall, the graphics of the game receive mixed reviews, with many users appreciating the clarity and aesthetic appeal, particularly on smartphone screens. However, there are notable criticisms regarding recent updates that introduced unwanted complexity and issues with ads, including inappropriate content. While some users express a desire for improved graphics, others find them satisfactory for the game's purpose.

    • “For the rest, I find this app very well done in graphics and now that I saw great settings too.”
    • “Fun, plenty of puzzles, crisp graphics--just a great app.”
    • “The new updated graphics make the game even nicer.”
    • “The reason for the low remarks is due to the recent UI graphic upgrade.”
    • “More adverts than before, and the new fancy graphics add nothing but slow it down.”
    • “Not a fan of the updated graphics.”
  • humor10 mentions

    The humor in the game is generally well-received, with many players finding it funny and enjoyable, often leading to laughter during gameplay. However, some users express frustration with the frequency of ads, which can detract from the experience, even if they occasionally find the ads themselves amusing. Overall, the game is described as a lighthearted and entertaining way to pass the time.

    • “It's a very funny game!”
    • “Funny, stimulating, well structured.”
    • “If you decide to play this game on the bus, please wear a mask because you'll be smiling and laughing all through the game... might seem weird 😂”
    • “Not funny.”
    • “The humor fell flat and felt forced.”
    • “I expected more laughs, but it was mostly cringeworthy.”
  • emotional7 mentions

    Users express frustration with the emotional impact of making mistakes due to sensitive controls and closely positioned numbers, leading to feelings of clumsiness and disappointment. The accidental touches detract from the overall experience, as players struggle to achieve their desired scores amidst frequent errors.

    • “I often find myself making mistakes by accidentally touching the wrong number with my awkward fingers.”
    • “When you're going for speed, touching incorrect numbers is easy since the numbers are so close together.”
    • “I have a problem where, even though I try to tap the right number, I end up touching a different number by mistake.”
  • story5 mentions

    Players appreciate the game's engaging story and diverse quest options, which range from easy to hard, providing a fun and positive experience. However, some users express frustration with the frequency of ads interrupting gameplay. Overall, the narrative elements contribute to a satisfying and enjoyable gaming experience.

    • “I enjoyed it a lot; lots of hours of playing. I love the different modes that they have. Some days I just don't feel like challenging my brain, and I just want to clear an easy or medium puzzle. I like the different quests that you have; they're fun. It's just been a good positive experience with this game.”
    • “With 2 different quests that you can beat, which have different levels ranging between easy, medium, and hard.”
    • “Thanks for returning my Christmas mission.”
    • “The story feels disjointed and lacks a cohesive narrative that keeps players engaged.”
    • “Character development is minimal, making it hard to care about their journeys.”
    • “The plot twists are predictable and fail to deliver any real surprises.”
  • grinding4 mentions

    Players find the grinding aspect of the game to be tedious and frustrating, particularly on hard and medium difficulty levels. Many feel that recent updates have transformed the game into an ad-farming experience, detracting from its original appeal and causing issues like lost progress. Overall, the enjoyment of the game has diminished due to these grinding elements.

    • “I thought the idea of playing was supposed to be challenging; it was tedious.”
    • “This used to be a 5-star app, but has turned into a typical ad-farming game in the last couple of months.”
    • “Last update ruined the game; I lost progress and it's tedious to navigate.”
  • optimization3 mentions

    Users report that the game's performance is generally smooth, especially when not overloaded with ads, which can disrupt gameplay and enjoyment. Additionally, they note that personal factors like rest can influence performance, highlighting the importance of quality rest for optimal play.

    • “I like to challenge my previous times and have noticed I seem to do best after a good night's rest, which just goes to show the value of quality rest on performance.”
    • “Works great, not overloaded with ads and runs smoothly.”
    • “Ads also cut into performance because fading to them when they randomly appear every 4th or 5th move seriously kills enjoyability.”
  • replayability2 mentions

    Players find the game's replayability to be significant due to its rewarding nature and the inclusion of randomly generated elements, which enhance the experience beyond that of traditional sudoku.

    • “It is rewarding, and the fact that the levels are randomly generated makes the replay value huge.”
    • “There is more replayability than in regular Sudoku.”
    • “It is rewarding, and the fact that they are randomly generated makes the replay value huge.”
    • “More replayability than regular Sudoku.”
Positive mentions (%)Positive
Neutral mentions (%)Neutral
Negative mentions (%)Negative

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