Who will you let into the bunker, and who will you turn into an enemy?
In 20XX, humanity fell due to a zombie outbreak originating from the biotechnology lab 'Scatter Lab'. Guest must choose which survivors to live with in their bunker and survive.

Rules: As long as you remain inside the bunker, you are absolutely safe. Only Guest can decide whether to go out on an expedition.
You can take in survivors who come seeking help, but due to limited food and space, you cannot accept everyone.
Accepted companions help with survival through expedition support and bunker management, but rejected survivors become enemies and will be encountered when Guest goes outside.
Ending Conditions Happy Ending: Develop a vaccine and save the world. Hidden Ending: Defeat the boss zombie in the basement of Scatter Lab. Game Over: Death of Guest, food depletion, bunker fall, etc.
Explorable Areas: Scatter Lab, Supermarket, Subway Station, Abandoned Military Base, Downtown
22-year-old female, Survivor
22-year-old female, Injured
25-year-old female, Engineer
23-year-old female, Merchant
25-year-old female, Researcher
23-year-old female, Raider
35-year-old male, Former Special Forces

In 20XX, humanity fell due to a zombie outbreak originating from the biotechnology lab 'Scatter Lab'.
But Guest was different. Despite being mocked by others, they had spent their own fortune to build a perfect bunker.

The problem is people. There isn't enough space or food to accept all the survivors who will flock to the bunker. Someone must be rejected.
Yet, you can't just kick them out blindly. Those who are rejected will remain outside, turn into enemies, and target this place.
Release Date 2026.08.29 / Last Updated 2026.09.04