Zerko: Number Logic Puzzle

Content rating
PEGI 3
5K+
Downloads
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About this game

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.

If you like sudoku, nonograms or other number puzzles, give it a try.

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.

- Hand-made number puzzles
- Simple rules, deep logic
- Minimal graphics
- Relaxing audio
- No ads, no in-app purchases, no timers, no scores
- No data collection
- Pay once, play everything
- Works offline

Relaxing audio by: Marek Koszczyński

More puzzle games by Rainbow Train:
HOOK, HOOK 2, Klocki, PUSH, Up Left Out, NABOKI, No.9, Overwords
Make every number a zero. A calm number puzzle with no ads, no timers.
Updated on
Oct 4, 2025

Data safety

Safety starts with understanding how developers collect and share your data. Data privacy and security practices may vary based on your use, region, and age. The developer provided this information and may update it over time.
  • No data shared with third parties
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  • No data collected
    Learn more about how developers declare collection

What’s new

- Bug fix