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A late-90s retro 3D horror where you feed the Biomass Core to escape. No keys. No doors.
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CHWÆST: A Creeping Parasite Horror
SteamAbout CHWÆST: A Creeping Parasite Horror
CHWÆST — Feed the Biomass Core to progress
A late-90s inspired retro 3D horror where progress is biological.
You don’t unlock doors. No keys — you feed the Biomass Core.
CHWÆST takes place inside a living organism. Passages overgrow, corridors tighten, and the environment reacts to your presence.
At the center lies the Biomass Core (the Core) — the only way forward.
Your goal: complete simple objectives, bring offerings back to the Core, and push deeper until you find a way out.
How progression works
The entire environment is a single organism that depends on the Biomass Core being fed.
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When the Biomass Core is hungry — passages are blocked
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When you feed it — the organism retracts and reveals new paths
Doors are replaced by tendrils. Keys are replaced by food for the Biomass Core.
The core gameplay loop
find → grab → return → feed the Core
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objects hidden in darkness that must be carefully spotted
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small creatures crawling along the floor
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organisms that hide or escape when approached
In the game, you are given clear objectives such as:
Active outgrowth: Mushrooms → Feed the Core (Mushrooms 0/6)
FEED THE BIOMASS CORE — RETRACT OUTGROWTHS (0/5)
Every trip deeper into the tunnels becomes a decision: how far can you go before you must return to the Biomass Core?
One location. Constantly changing paths.
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item placement changes each playthrough
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you never fully know what you will encounter when you return to the Core
Visual style: how you remember it, not how it looked
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low internal resolution scaled sharply
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limited color depth and dithering
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classic 50/50 transparency effects
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subtle geometry artifacts that make the world feel unstable
This is not meant to be pretty. It is meant to feel unsettling and unsafe.
What to expect
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a short, intense horror experience (30–60 minutes)
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a unique mechanic centered around feeding the Biomass Core
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exploration of dark, organic tunnels
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minimalist rules and clear in-game objectives
If you enjoy horror that is mechanical, raw, and unpredictable — CHWÆST is exactly that.
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