Nether Infection
Nether Infection is a Magic mod in which a plague spreads across the Overworld, turning its biomes into a Nether ecosystem block by block.
What it does
The infection spreads from block to block and consumes Overworld biomes, replacing them with Nether terrain. Flora dies where the infection reaches the ground, netherrack takes its place, and the atmosphere becomes hostile. Trees, grass and structures are safe from conversion, but the landscape changes steadily and those changes are permanent once the spread has started.
The mod is aimed at hardcore survival play. Players find that resources on the surface grow scarcer as the infection progresses, which forces quick changes to their routines. Once the infection has reached a stage of development it cannot be stopped or cured, and no containment method is available, so the play is a race against the clock.
The author strongly advises using the mod in a primary survival save and creating a backup of the world before installing or loading the mod, since existing builds and important structures can be affected. Nether Infection is not open source and is released under All rights reserved. It runs on client and server and is published for Fabric, Forge and NeoForge across 29 release versions, 1.17 – 1.21.11. The mod is in its beta phase.
Key features
Dynamic spread
The infection converts Overworld biomes over time, so the world changes as the player explores and builds.
Radical transformation
Converted terrain becomes Nether ecosystem, while trees, grass and structures are left unconverted.
Hardcore survival
Surface resources become scarcer as the infection advances, which pushes players to adapt their routines.
Unstoppable infection
Once a stage of development is reached, the infection cannot be stopped or cured by any method in the mod.
Gallery
Compatibility
Latest build for each game version and loader.
1.21.x12 of 12 versions with builds
1.20.x7 of 7 versions with builds
1.19.x5 of 5 versions with builds
1.18.x3 of 3 versions with builds
1.17.x2 of 2 versions with builds
Only full game releases are shown. This mod publishes no snapshot builds.
How it compares
Nether Portal Spread is a server-side only mod for Fabric, Forge, NeoForge and Quilt, covering 1.16.5 – 26.3, and is not open source. BloodInfection999 is a client and server mod for Fabric and Forge, covering 1.20.1 – 1.21.11, under All rights reserved.
| Mod | Loaders | Game versions | Environment | Updated |
|---|---|---|---|---|
| Nether Infection | Fabric, Forge and NeoForge | 1.17 – 1.21.11 | Client and server | 2026-03-14 |
| Nether Portal Spread | Fabric, Forge, NeoForge and Quilt | 1.16.5 – 26.3 | Server-side only | 2026-10-02 |
| BloodInfection999 | Fabric and Forge | 1.20.1 – 1.21.11 | Client and server | 2026-08-16 |
Questions
Which loaders does Nether Infection support?
Does the server need Nether Infection installed?
Can the infection be cured once it starts?
In the catalog
Nether Infection is one of 7,216 Magic mods on ModsFinder, and one of 3,630 Magic mods for Fabric. 19,862 mods support Minecraft 1.21.11.
More from OpenBlock’s Team
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What the author says
The Nether is no longer bound to its own dimension. It is expanding into yours. NetherInfection redefines Minecraft survival by introducing a dynamic corruption mechanic. The Nether is no longer just a destination accessed through a portal; it is a plague spreading across your world. Flora dies, the ground converts…
Official listing
- Modrinth page
- modrinth.com/mod/nether-infection
- Owner
- OpenBlock’s Team
- Published
- 2026-01-10
- Updated on Modrinth
- 2026-03-14
- Facts verified
- 2026-10-15