Comparison

Killer Sudoku vs 3D Puzzle「VariableCube」

Price, ratings, monetisation and update history for both games, side by side — with what reviewers say about each.

Head to head
About

Killer Sudoku

This logic puzzle game challenges players to fill a grid with numbers, ensuring sums within cages match designated totals. It offers various difficulty levels, helpful tools like notes and hints, and daily challenges for brain training.

Highlights
  • Cage sum logic puzzles
  • Multiple difficulty levels
  • Note-taking mode
  • Undo and hint functions
  • Daily challenges
  • Dark and color themes
Features
Read full description

Enjoy the excellent Killer Sudoku puzzle game for both beginners and advanced Sudoku lovers! Download and start the daily challenge now! Thousands of killer sudoku puzzles here for you to solve. Come to play this new killer sudoku game, and train your brain. Have fun! [New] Dark Theme is available now! Perfect for you to play Killer Sudoku before bed. [New] Color Theme. Playing games could be colorful! [New] Casual Mode. 4*4 and 6*6 boards bring you more fun! Killer Sudoku is a logical puzzle number game & brain game. To complete a puzzle, like the classic sudoku game, you can fill the grid with numbers; unlike the classic sudoku puzzle, you have to make sure that the sum of numbers in each cage (areas surrounded by the dotted lines) is equal to the number in the upper left corner of the cage. If you are interested in playing number games or math puzzle games, this Killer Sudoku is exactly for you! If you'd ever played number games, such as Sumdoku, Addoku or Cross sum, come to try this one, too! It is an amazing combination of a sudoku puzzle, a KenKen and a Kakuro puzzle game. Killer Sudoku may be a little bit harder than a classic sudoku puzzle game, no worries! We offer several balanced difficulty levels for beginners and advanced players! The game has the function to add or remove notes during gameplay. Did you make a mistake at the beginning? No worries, there are undo and hint functions! Get it back fast! How to play: 1. Place numbers 1-9 into each grid cell exactly like in a classic Sudoku puzzle; 2. Different cages - groups of grid cells indicated by dotted lines; 3. The sum of all numbers in each cage should be equal to the number in the upper left corner; 4. The sum of all numbers of each 3x3 block, row, or column always equals 45; 5. Each cage, row, column, or 3x3 block cannot have the repeated numbers. Features: - Turn on the note mode to take notes like solving puzzles on a piece of paper. The memo is automatically updated while you fill in the cell. - Find your mistakes and challenge yourself or use auto-check to see your mistakes in real-time. - Complete daily challenges and earn special trophies! - Use free hints when you are stuck. - Thousands of killer sudoku puzzle games More functions and highlights: - Statistics. Track your killer sudoku progress. - Unlimited Undo. One tap to remove the mistake. - Autosave. If you leave Sudoku incomplete, it will be saved. Keep playing anytime. - Eraser. Eliminate all of the mistakes if you made any. - Sharing functions. You can share this sudoku game with your friends via Facebook, Twitter, etc. - Four perfectly balanced difficulty levels: Easy, Medium, Hard, and Expert. Train your brain anytime and anywhere and keep your mind sharp in this Killer Sudoku puzzle game. With its easy control, intuitive interface, and perfect selection of different levels, this killer sudoku app will help you to enhance your logical ability and learn more Sudoku skills. Come and try it out! Challenge yourself how quickly you can solve problems and improve your memory! We always carefully check all reviews. Please feel free to leave your ideas, feedback, suggestions, or any questions about Killer Sudoku for further improvements! We are always here for you. Thank you and have fun with Killer Sudoku, Sudoku Puzzle! Privacy policy: https://killer-sudoku.gurugame.ai/policy.html Terms of use: https://killer-sudoku.gurugame.ai/termsofservice.html

About

3D Puzzle「VariableCube」

Features
Read full description

◆ A Brand-New 3D Cube Puzzle with Customizable Difficulty!"Traditional 6-face puzzles are just too difficult, so I gave up..." If that sounds like you, "Variable Cube" was created just for you! This innovative 3D puzzle app allows you to freely customize both the rules and the visual appearance to fit your style.Start with a puzzle scrambled in just 1 single move, and scale it all the way up to 25 moves! From children to adults, anyone can strengthen their logical thinking skills and enjoy the challenge at their very own pace. ◆ Key Features of Variable Cube [1] Flexible Color Count Modes (2–6 Colors)Not just the standard 6-color challenge! Start with the beginner-friendly "2-Color Mode" (featuring 3 faces per color) and step up your skills gradually. Master everything from the absolute basics to advanced puzzle solving! [2] Selectable Scramble Counts (1–25 Moves)Once you download the app, take on your first challenge: the "1-Move Clear"! Successfully clearing this will unlock full control, allowing you to freely adjust the scramble difficulty up to 25 moves. [3] Complete Color CustomizationFully customize the cube's appearance with your favorite color schemes! Select and apply custom palettes to play with your very own unique, original cube design. [4] Two Dynamic Game ModesTry Mode: No time limit! Ideal for relaxing. Plus, your very first 1-move playthrough comes with easy-to-follow, animated touch control guides!Time Mode: Race against the clock with a fixed 20-move scramble and track your best clear time. ◆ Simple ControlsRotate View: Slide the empty background outside the cube to rotate the camera (perspective) and observe the puzzle from any angle.Rotate Cube: Slide any colored tile on the cube to rotate that specific row.Clear Condition: When all faces match their respective colors and all 6 sides are complete, you win!

Screenshots

Killer Sudoku4 screens
3D Puzzle「VariableCube」4 screens

Verdict

The call

The clearest difference is in-app purchases: 3D Puzzle「VariableCube」 at none against Killer Sudoku's 4. 3D Puzzle「VariableCube」 also leads on update cadence (every 5 days vs every 5 weeks). Killer Sudoku's advantage is device support (3 vs 1) and iOS requirement (13.0 vs 26.2). On price and ads there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Killer Sudoku sells 4 in-app purchases, starting at $2.99 per month. 3D Puzzle「VariableCube」 asks for nothing beyond the download.

UpkeepUpdate frequency

Killer Sudoku ships an update every 5 weeks, 3D Puzzle「VariableCube」 every 5 days. The most recent releases landed on October 29, 2026 and October 8, 2026 respectively.

Scorecard4 real differences · 6 level
Killer Sudoku versus 3D Puzzle「VariableCube」: the parameters behind the verdict, then further details
ParameterKiller Sudoku3D Puzzle「VariableCube」
PriceFreeFree
Rating4.8 (6.3K ratings) — better—
Positive reviews36.4% of reviews—
Number of ratings6.3K — better—
Update frequencyEvery 5 weeksEvery 5 days — better
AdsYesYes
In-app purchasesYesNo — better
MonetizationFree with in-app purchases—
DevicesiPhone, iPad, iPod — betteriPhone
Requires iOS13.0 — better26.2
Further details — not scored
Size258 MB4 MB
Age rating4+4+
DeveloperGuru Smart Holding Limitednaohito fukunishi

Bugs and requests

Killer Sudoku

Reported bugs

8 issues
  • Randomly opening tracking pages
  • Security risk from suspicious URLs
  • Progress loss and erasing
  • Freezing and crashing
  • Bugs in latest updates
Show 3 more
  • Glitches in tournaments
  • Unsolvable puzzles
  • Constant glitches

Requested features

7 requests
  • Bring back ability to do previous daily challenges
  • Add landscape mode option
  • Implement static banner ads
  • Add auto-lock option
  • Provide option to choose difficulty level in daily challenge
Show 2 more
  • Improve notes font size
  • Implement dark mode

3D Puzzle「VariableCube」

Not enough reviews yet to summarise bugs or requests.

In-app purchases

4 purchases

Killer Sudoku

Subscriptions3
  • Monthly Subscription$2.991 Month
  • 3 Months Subscription$5.993 Months
  • Yearly Subscription$14.991 Year
One-time1
  • Killer Sudoku Premium$14.99
None

3D Puzzle「VariableCube」

No in-app purchases

Questions

Is Killer Sudoku free?
Killer Sudoku is free to download, with in-app purchases available.
Is 3D Puzzle「VariableCube」 free?
3D Puzzle「VariableCube」 is free to download, with no in-app purchases.
Do Killer Sudoku or 3D Puzzle「VariableCube」 have ads?
Both Killer Sudoku and 3D Puzzle「VariableCube」 show ads.
Which is updated more often, Killer Sudoku or 3D Puzzle「VariableCube」?
Killer Sudoku ships an update every 5 weeks, and 3D Puzzle「VariableCube」 every 5 days. Most recently, Killer Sudoku was updated on October 29, 2026 and 3D Puzzle「VariableCube」 on October 8, 2026.

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