[Gameplay]
This game uses auto-saving.

In the year 2320, a massive, tentacled monster knowns as "The Black Goat" appeared. It had the ability to induce madness, and could only be harmed by magical energy. Unfortunately, the the overabundance of pollution had all but drained the world of that energy.

It's up to you to go to another world, receive magical powers from a beautiful girl, and return home to save humanity!

Ark Mobius [YellowDuckWorks]
[Rhythm Gameplay]
A rhythm game that can be controlled with just a mouse! Work your way through side-scrolling stages facing off against a variety of enemies in time with the music! We recommend headphones for the best possible experience. And if you're not good at rhythm games, you can lock your HP!

Scene Puzzles:
Visit different places related to the girls and advance the story!

Ark Mobius [YellowDuckWorks]
[Multiple Endings]
Each girl has multiple endings. Warmth, catharsis, disaster... it's all up to you and your choices. No need to worry about branching paths. After clearing the first week, the free mode will be unlocked, so you can advance through the story however you want.

Ark Mobius [YellowDuckWorks]
[H Scene]
Lots and lots of CGs!
Important scenes are animated via Live2D.