iPhone Screenshots


Thank you 800,000 download!!

[About Marimo]

Marimo means a plant like a green ball which grow in Hokkaido, Japan.

You can raise a Marimo.
A marimo will grow up little by little every day.
When water become dirty, you need to refresh water.
If you don't take care of a Marimo long time, Marimo will wither.

[Other Features]

- You can rename Marimo, and change background.
- Drag to move Marimo.
- Double tap to pick tap Marimo.
- Rotate marimo with two finger.
- Marimo moves by the direction of the device.
- You can upload image of Marimo on Twitter/Facebook.
- Photosynthesis occurs in a bright place.

What’s New

Version 3.13.2

- iOS 13 and Dark mode compatible! Enjoy marimo life.
- Fix Tweet share bug

Ratings and Reviews

4.0 out of 5
4 Ratings

4 Ratings

Edgughibvdg ,

What it is

Basically it's a very realistic simulator for growing a real Marimo, also my high score is 887 days, beat that.

Fabulosa oh game ,

Awesome game simulates it pretty well!!

Love it! It simulates pretty well

Miyankocat ,

I love!

You can breed a Marimo. A marimo will grow up little by little every day. When water become muddy, you need to change water using a button which is right upper corner. If you leave a marimo alone long time, water get too muddy, and marimo will wither. you can touch marimo. Also, when you tilt your ipod, marimo will roll over. You can change marimo's name and background from lower middle button. Something like that:)


Kosuke Ogawa
22.4 MB

Requires iOS 8.1 or later. Compatible with iPhone, iPad, and iPod touch.


English, Japanese

Age Rating


  • Family Sharing

    With Family Sharing set up, up to six family members can use this app.

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