Comparison

Cross Do Ku vs Space Bubble Puzzle

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

Head to head
About

Cross Do Ku

A new line drawing puzzle game where you fill grids by drawing horizontal or vertical lines. It offers 8 distinct modes and over 1200 challenging levels to test your logic and spatial reasoning skills.

Highlights
  • Draw horizontal or vertical lines
  • Fill all grids
  • 8 game modes
  • 1200+ levels
  • New line drawing puzzle
Features
Read full description

Just draw lines on the grid as many as the number of blocks! You can draw lines only horizontally or vertically. Fill all grids with lines! 8 modes and 1200 levels are available.

About

Space Bubble Puzzle

Read full description

Space Bubble Puzzle is a kind of unique game that combines Sudoku with a match-3 puzzle. Enjoy the exhilaration of connecting blocks to remove them all at once! Blocks of the same color increase your score even more! There's no time limit, so you can play at your own pace and relax. Start playing in your spare time, stop midway, and resume anytime! Game Features: 1.Simple but addicting mechanics ・Place blocks of different shapes on a 9x9 board and erase them ・You can erase the placed blocks by lining them up vertically or horizontally ・You can erase blocks even if you place them without gaps in a 3x3 area ・You can increase your score by connecting blocks of the same color to erase them 2. A chance to get a high score! Activate Fever Time! ・When you erase a certain number of blocks, Fever Time is activated for 30 seconds ・During Fever Time, you can use useful items without consuming coins or watching videos ・Rotate the blocks you've been dealt or replace them with other blocks to erase them one after another! ・When Fever Time ends, the gauge will go to 0 and the next activation condition will be displayed immediately 3. Achieve the conditions to increase your level and aim for a high score! ・Achieve the conditions within the specified number of turns to move on to the next level! ・As you increase the level, the clearing conditions increase, and the difficulty increases! ・Place blocks of the same color to erase colored obstacle squares! ・Rainbow colored blocks can be ignored as obstacle squares!

Screenshots

Cross Do Ku4 screens
Space Bubble Puzzle4 screens

Verdict

The call

The clearest difference is in-app purchases: Space Bubble Puzzle at none against Cross Do Ku's 6. On price, update cadence, ads and device support 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. Cross Do Ku sells 6 one-off in-app purchases. Space Bubble Puzzle asks for nothing beyond the download.

UpkeepUpdate frequency

Cross Do Ku ships an update every 3 weeks, Space Bubble Puzzle monthly. The most recent releases landed on November 2, 2026 and November 4, 2026 respectively.

Scorecard1 real difference · 9 level
Cross Do Ku versus Space Bubble Puzzle: the parameters behind the verdict, then further details
ParameterCross Do KuSpace Bubble Puzzle
PriceFreeFree
Rating4.6 (92 ratings) — better—
Positive reviews83.3% of reviews—
Number of ratings92 — better—
Update frequencyEvery 3 weeks — betterMonthly
AdsYesYes
In-app purchasesYesNo — better
MonetizationFree with in-app purchases—
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS11.0 — better12.0
Further details — not scored
Size129 MB136 MB
Age rating4+4+
Developerlee seung jooYuta Kamiya

In-app purchases

6 purchases

Cross Do Ku

One-time6
  • Hint x 20$0.99
  • Remove ads$2.99
  • 30 hints$2.99
Show 3 more
  • Hint x 70$2.99
  • 60 hints$4.99
  • Hint x 150$5.99
None

Space Bubble Puzzle

No in-app purchases

Questions

Is Cross Do Ku free?
Cross Do Ku is free to download, with in-app purchases available.
Is Space Bubble Puzzle free?
Space Bubble Puzzle is free to download, with no in-app purchases.
Do Cross Do Ku or Space Bubble Puzzle have ads?
Both Cross Do Ku and Space Bubble Puzzle show ads.
Which is updated more often, Cross Do Ku or Space Bubble Puzzle?
Cross Do Ku ships an update every 3 weeks, and Space Bubble Puzzle monthly. Most recently, Cross Do Ku was updated on November 2, 2026 and Space Bubble Puzzle on November 4, 2026.

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