A cheerful puzzle for Game Boy Color

Meet KORO — Colorful Puzzle For Everyone

Help a little mouse collect runaway marbles in a bright, quick and endlessly replayable puzzle game.

Get the game Play the demo
  • Game Boy Color
  • Physical edition
  • Made in Poland
Koro Game Boy Color box, cartridge and console presentation
Cute logic puzzle!
Clear 24 lines
Scroll to explore

A tiny story, a big challenge

The marbles escaped into the garden.

Koro loves to play marbles. One sunny day they rolled everywhere, and now every clever move brings them closer to home.

01

Match five

Find a line of five or more matching marbles and pick them up.

02

Plan each move

Every marble changes the board. Build the next line before space runs out.

03

Master the garden

Clear 24 lines to earn the title of Koro Master.

Designed for real hardware

Simple to learn.
Hard to stop.

A cheerful, quick-session puzzle game made for the Game Boy Color.

Flat print layout of the Koro game box

Try before you buy

Play Koro right here.

The browser demo uses the same compact controls and colorful rules as the cartridge.

CYFROWY NOMADA COLOR

Keyboard: X A   Z B   Enter Start   Tab Select

Koro Game Boy Color cartridge A real cartridge for your collection

Bring Koro home

KORO — Colorful Puzzle For Everyone

220,00 zł

Plan your route, line up the colors, and keep the board alive.

KORO is a new puzzle game for Game Boy Color. Move colorful balls across a 9 x 9 board and arrange five or more of the same color in a straight line. Every move matters: if you do not clear a line, three more balls join the board.

The next colors and their landing positions are shown in advance, giving you the information you need to prepare clever routes, build longer lines, and create rewarding multi-line clears. The rules are simple, but a crowded board quickly turns every decision into a puzzle.

Physical Edition

Each physical edition includes:

- KORO on a premium Game Boy Color cartridge
- Collector's presentation box
- Real glass marble
- Simple printed game manual

The glass marble completes the edition as a small physical tribute to KORO's colorful game pieces.

  • Region freeWorks on Game Boy Color hardware
  • Small-batch releaseMade and packed by Cyfrowy Nomada
  • Collector-readyBox, cartridge and printed materials

Made to feel special

From screen to shelf.

Koro physical edition product visualization
The complete Koro physical edition, ready for your collection.
Koro box artwork and print layout
Bright, playful packaging inspired by the game.
Koro cartridge visualization
A tiny game with a big personality.