Xenogenesis
by devvyyxyz
Xenogenesis is a NeoForge horror mod that places biomechanical structures and parasitic life deep underground in the 1.21.8 – 1.21.11 range.
What it does
Underground chambers built from black stone and organic shapes hold egg clusters that stay dormant until a player disturbs them. Facehugger-style creatures then seek a living host, and the infection incubates inside it before the host gives way to a violent emergence. Adult organisms can turn biomass into new eggs, so an infestation can keep growing once it has started.
The mod keeps the danger in the deep places rather than the surface, and it favors slow discovery over constant fights. Some infections can be treated if they are found early. Creatures can also appear in random surface encounters with an arcade-style feel. Players who explore below ground will meet most of the content.
Xenogenesis is installed on both the server and the client, since the environment is client and server. It is published for NeoForge only, and the latest file is 0.1.0 for 1.21.11, an alpha build. The Continuity and Just Enough Items (JEI) mods are optional dependencies that can be added alongside it.
Key features
Sealed underground structures
Biomechanical structures lie far below the surface, sealed until a player opens them.
Host-based infection
Facehugger-style creatures seek hosts, and the parasitic life cycle plays out inside them.
Egg chambers
Organic chambers contain parasitic organisms that stay dormant until disturbed.
Biomass conversion
Adult organisms convert biomass into new eggs, letting an infestation spread.
Gallery
Compatibility
Latest build for each game version and loader.
Only full game releases are shown. This mod publishes no snapshot builds.
Requirements
Dependencies declared by the latest file for each loader.
Optional 2
Use cases
Horror exploration
Players who want slow, tense exploration of dark underground places can seek out the sealed structures and chambers.
Streams and videos
Content creators showcasing horror builds and encounters can record the infestation sequences.
Who it’s for: Players who want tension and rare encounters rather than constant combat, and servers that want a horror-focused experience where each player gets an individual run through the underground.
Questions
Does Xenogenesis need to be installed on the server?
Which loader does Xenogenesis support?
Are Continuity and JEI required?
Does Xenogenesis work on older Minecraft versions?
More from devvyyxyz
What the author says
Xenogenesis is a biomechanical horror mod inspired by Alien (1979), Prometheus, and the disturbing art of H. R. Giger. Xenogenesis transforms the underground into a place of ancient design and living machinery. Hidden far below the surface are sealed structures—black stone, organic shapes, and chambers that breathe…
Official listing
- Modrinth page
- modrinth.com/mod/xenogenesis
- Owner
- devvyyxyz
- Published
- 2025-12-18
- Updated on Modrinth
- 2025-12-30
- Facts verified
- 2026-10-15