One night, a guy received a message on my smartphone from Saki, his sister, a nurse, asking for help. When I rushed to the clinic where she works, there were people who had gone crazy. I advance into underground of the clinic in search of my sister.

First Person Shooting (FPS)

Aim at head of zombies and escape the crisis.

Various Weapons

There are various weapons. The number of bullets are limited, so you attack enemies by a deck-brush and throwing bottles.

Stealth

Determine which enemies to defeat and which to avoid. You also need to think about hiding from enemies in order to save bullets and avoid danger. Utilize “Lean” action to lean your body and hide from enemies.

Maps are generated randomly

The maps are generated randomly, so you can play them with a fresh feeling even after you've cleared them once.