Evolve!

For our friends ――

A 3D action game where marimo algae fight for survival against various Invading Alien Species!

Master a variety of actions, mow down your enemies, and save your friend!

● Overview ●

Save Marimo!

Strengthen your marimo and wipe out the threats closing in on the Marimo――

• Story Mode

• Marimo Upgrades
  Customize your marimo’s abilities freely using items obtained from rewards and exploration!
  Adapting your upgrades to each situation is the key to overcoming powerful enemies and high-difficulty missions...

• Field Exploration
  Freely explore the lake to discover hidden items, information, side quests, and lurking dangers.
  The environment may even change as the story progresses…

• Unravel the Mystery in an Optional Sub-Story

● Story ●

The marimo of Lake Akan once lived peaceful lives.
However, rising water temperatures and a lack of sunlight drastically reduced their numbers. With help from humans, they recovered and began to thrive again.

But after many years, the lake suddenly turned into seawater, wiping out much of its ecosystem. Invading species from the sea threatened the survivors, pushing the marimo to the brink of extinction.

Then, mysterious glowing particles appeared underwater, driving creatures into a frenzy… and granting new power to the remaining marimo.

(This story shares the same world and timeline as the previous title, " Marimo-VS-IAS ," but can be fully enjoyed on its own.)