Zerko

Zerko

Rainbow Train·4.6 ★·$3.49

Screenshots

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Description

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 Koszczyński

Developer

Rainbow Train

Developer ID: 7949958676360116567

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Ratings & Reviews

4.6

74 ratings

5,000+ downloads

5★
69%
4★
23%
3★
7%
2★
0%
1★
0%

Recent Reviews

Elizabeth West

v1.1

Puzzles are excellent but either they need to be more challenging or there needs to be far more levels to make the price worth it. Finished the whole game in the time it took to have a pot of coffee

Mar 7, 2026

autumnfallen

A bit short, especially if you like to really sink into a game, but overall an engaging puzzle 🧩

Dec 25, 2025

Jo Gard

v1.1

more levels pls 🙏

Dec 24, 2025

Hissa Kreo

v1.1

Good puzzles. Struggle with lvl 50, for me it looks unsolvable. I checked one tutorial on YouTube and lvl 50 looks different from mine. Still don't have the solution.

Dec 13, 2025

G H (Gear Junkie)

v1.1

Good brain puzzles. Finished all 50 puzzles. I hope for being a paid game there will be more puzzles in the future.

Dec 8, 2025

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