Zerko

đŸ‡ș🇾 United States
Rainbow Train  | 
30
ASO score
Text
21/100
Reviews
60/100
Graphic
40/100
Other
0/100
rating
App Rating
4.8
rating
Votes
2.63K
rating
App Age
1 year 10m
rating
Last Update
Oct 04, 2025

Compare with Category Top Apps

Metrics
Current App
Category Top Average
Difference
Installs
5.2K
42.7M
-100%
Rating
4.69
4.5
+4%
Number of Ratings (Voted)
1.9K
81.1M
-100%
App Age
1y 9m
3y 8m
-51%
Price
$3
$0
In-app Purchases Price
$0
$64
Update Frequency
108d
21d
+413%
Title Length
5
19
-74%
Short Description Length
25
65
-62%
Description Length
678
1 918
-65%
Number of Screenshots
84
1201
-93 %
Has Video?
No
0% has videos
Size
0MB
0MB

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Downloads

Downloads Graph
Downloads icon
Total
5.2K
Last month icon
Last month
41

Text ASO

Title (
Characters: 5 of 50
)
Zerko
Short Description (
Characters: 25 of 80
)
Make every number a zero!
Description (
Characters: 678 of 4000
)
Some call it reverse sudoku, while others call it a nullification game, but it's Zerko - a puzzle game filled with shapes, numbers, and a straightforward goal: make every number zero. To achieve this, you need to strategically place blocks of various shapes and values so that the numbers on the board effectively "remove up" to zero. Like all my games, this one too is about relaxation... Just chill. There are no points, no time pressure, no data collection, no in-app purchases, no ads, no nonsense ;) My only hope is that you'll enjoy it and that I'll be able to add new content and levels for you in the future. Relaxing audio by: Marek KoszczyƄski}
Read more

Visual ASO

Screenshots

Rating & Reviews

Reviews Overview
🧐 Coming Soon

Rating
4.8
2 625 voters

Some Latest Reviews

autumnfallen
25 Dec, 2025
5
A bit short, especially if you like to really sink into a game, but overall an engaging puzzle đŸ§©
G H (Gear Junkie)
08 Dec, 2025
4
Good brain puzzles. Finished all 50 puzzles. I hope for being a paid game there will be more puzzles in the future.
Bruno Del Frate
09 Nov, 2025
3
QualitĂ  altissima, come tutti i giochi Rainbow Train, per un puzzle game rilassante che ti prende e non ti lascia piĂč. Grafica pulitissima e difficoltĂ  calibrata estremamente bene. L'unico vero problema Ăš la longevitĂ : i 50 livelli si finiscono abbastanza presto. Peccato!
Ruby J. Scheme
20 Aug, 2025
4
Probably the easiest Rainbow Train puzzle game. Too casual for my taste but as well made as usual.
НоĐșота Đ§Ń‘Ń€ĐœŃ‹Đč
11 Aug, 2025
5
219 Ń€ŃƒĐ±Đ»Đ”Đč огра ĐșĐŸĐœĐ”Ń‡ĐœĐŸ ĐœĐ” ŃŃ‚ĐŸĐžŃ‚ (ĐŸŃĐŸĐ±Đ”ĐœĐœĐŸ учотыĐČая Ń‚ĐŸ, Ń‡Ń‚ĐŸ ĐČ ĐĄŃ‚ĐžĐŒĐ” ĐŸĐœĐ° ĐżŃ€ĐŸĐŽĐ°Ń‘Ń‚ŃŃ за 82 Ń€ŃƒĐ±Đ»Ń, Ń‡Ń‚ĐŸ ужД Đ±ĐŸĐ»Đ”Đ” ОлО ĐŒĐ”ĐœĐ”Đ”), ĐœĐŸ ДслО ĐŸŃ‚Đ±Ń€ĐŸŃĐžŃ‚ŃŒ ĐŒŃ‹ŃĐ»Đž ĐŸ Ń†Đ”ĐœĐ”, огра ĐŸŃ‡Đ”ĐœŃŒ ЎажД Ń…ĐŸŃ€ĐŸŃˆĐ°Ń! ĐŸŃ€ĐŸŃˆŃ‘Đ» ĐČсД 50 ŃƒŃ€ĐŸĐČĐœĐ”Đč гЎД-Ń‚ĐŸ за ĐżĐŸĐ»Ń‚ĐŸŃ€Đ° часа; ĐżĐŸŃŃ‚Đ”ĐżĐ”ĐœĐœĐŸ ĐżŃ€ĐŸĐžŃŃ…ĐŸĐŽĐžŃ‚ ĐŸĐ±ŃƒŃ‡Đ”ĐœĐžĐ” "праĐČĐžĐ»Đ°ĐŒ огры" (чДрДз ŃĐ°ĐŒĐž ŃƒŃ€ĐŸĐČĐœĐž), Đž ДстДстĐČĐ”ĐœĐœĐŸ ĐżŃ€ĐŸĐžŃŃ…ĐŸĐŽĐžŃ‚ ĐżĐŸŃŃ‚Đ”ĐżĐ”ĐœĐœĐŸĐ” ŃƒŃĐ»ĐŸĐ¶ĐœĐ”ĐœĐžĐ” (Ń…ĐŸŃ‚Ń ĐżĐŸŃĐ»Đ”ĐŽĐœĐžĐ” ĐœĐ”ŃĐșĐŸĐ»ŃŒĐșĐŸ ŃƒŃ€ĐŸĐČĐœĐ”Đč былО лДгчД ĐŸĐŽĐœĐŸĐłĐŸ ĐŸŃ‡Đ”ĐœŃŒ Đ·Đ°ĐŒŃƒĐŽŃ€Ń‘ĐœĐœĐŸĐłĐŸ (ĐœĐ” ĐżĐŸĐŒĐœŃŽ Ń‚ĐŸŃ‡ĐœĐŸ, ĐșаĐșĐŸĐłĐŸ), ĐœĐ° ĐșĐŸŃ‚ĐŸŃ€Ń‹Đč я ĐżĐŸŃ‚Ń€Đ°Ń‚ĐžĐ» ĐŒĐžĐœŃƒŃ‚ 15 (ĐŒĐŸĐ¶Đ”Ń‚ ЎажД 20)).
Joel L
18 May, 2025
4
Casse tĂȘte sympathique. Je l'ai trouvĂ© assez facile malgrĂ© le fait qu'il puisse faire peur au dĂ©part. Un peu court Ă©galement.
Robin T
05 May, 2025
5
pretty short game, don't think I spent more than maybe 60-70 minutes in total but it was a fun game. its a bit like a mix between sudoku and laying puzzles, with a relaxed difficulty level. no annoying ads or credits you need to buy which is always appreciated 👍
Bruno Del Sarto
04 May, 2025
5
Entretenida. Lo malo es que en 38 mins ya me terminé los 50 niveles...
Neko_Clive Salena
04 May, 2025
5
It was an amazing experience, I'll absolutely love this game. My only problem was it's very short

Other

Additional Information
Rating:
4.8
Voted: 2.63K
Google Play Link:
Price: 2.72 $
Website:
Email:
Privacy Policy:
Categories: Puzzle
Size: -
Installs: 5.17K
App Age: 1 year 10 months
Release Date: Mar 26, 2024
Last Update: Oct 04, 2025
Version: 1.1
Version history
1.1
Oct 04, 2025
- Bug fix
1.0
Aug 06, 2025
- Bug fix<br>- New api
Version history