Zoochosis

First-person zoo horror simulation about treating animals that mutate

Clapperheads · Published by Clapperheads, Storymode · Released Sep 30, 2024

Reviews: Mixed; 61% of 2,399
Recent reviews: Mixed; 60% of 20 in 30 days
Playing now: 4; peak 24h 9
Steam Deck: Playable
Last update: 1 year ago; Sep 8, 2025

What is Zoochosis?

A first-person, single-player horror simulation set in a zoo during a new zookeeper's night shift. You feed animals, clean enclosures, investigate illness, and prepare vaccines as infected animals turn into mutants. Your choices lead to different endings.

For you if...

+you enjoy routine animal care interrupted by horror
+you like replaying to see where different choices lead

Not for you if...

−you dislike repeating care tasks across playthroughs
−you prefer to diagnose illness without time pressure

What players say

61% of 2,399 reviews are positive · 60% of 20 in the last 30 days

Players praise the mutant designs and the incentive to replay for different endings. They commonly complain that the tutorial leaves curing unclear and animals mutate before treatment is ready. Some report bugs that block progress; players disagree on whether updates have improved the game.

Screenshots and trailer

Zoochosis system requirements

As published by the developer.

Minimum

OS: Windows 10 (64 bit)
Processor: Intel Core i3-6100/ Ryzen 3 3200
Graphics: AMD RX 570/ GTX 1050
Memory: 8 GB RAM
Storage: 10 GB available space
DirectX: Version 11

PC version details

DRM, required accounts, controller support and Steam features.

DRM: None declared on Steam
Controller: Full controller support
Platforms: Windows
Achievements: 21
Steam features: Cloud saves, Family Sharing, Trading cards

Steam Deck: Playable

Default controller config not fully functional
Sometimes shows mouse, keyboard or non-Deck controller icons
Some text entry requires manually opening the on-screen keyboard
Some in-game text is small and may be hard to read
Default configuration is not performant
External controllers are not supported for the primary player

Multiplayer and co-op

Single-player

Languages

Full audio: English. Text only: French, Italian, German, Japanese, Korean, Polish, Portuguese - Brazil, Russian, Simplified Chinese, Spanish - Latin America, Turkish, Ukrainian, Spanish - Spain, Arabic.