Infected World
Infected World is a NeoForge mod for Minecraft 1.21.1 that slowly spreads an infection across the world as time passes.
What it does
Over time the infection gradually takes over the terrain of a world, so areas change the longer a player stays in them. Infected wildlife appears alongside it, and once an animal is fully infected it turns hostile, which can cut off the animals a player relies on for food early in a run. Both sides of a server need the mod, since client and server must each run it. The code is under the MIT License and is not open source. Files are published for NeoForge only, for 1.21.1, with version 5.0 as the latest file from 2026-08-20.
Key features
Gradual world infection
The infection slowly spreads across the world, changing the terrain of areas a player has been in for a while.
Infected wildlife
Animals in the world can become infected and take on a different, altered form.
Hostile transformation
Passive animals turn hostile once they are completely infected, which makes hunting for food harder in the early game.
Gallery
Compatibility
Latest build for each game version and loader.
Only full game releases are shown. This mod publishes no snapshot builds.
Questions
Does Infected World need a loader other than NeoForge?
Does Infected World need to be installed on a server?
In the catalog
Infected World is one of 7,555 Cursed mods on ModsFinder, and one of 2,801 Cursed mods for NeoForge. 32,366 mods support Minecraft 1.21.1.
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What the author says
Infected World is an immersive, survival-horror Minecraft mod that plunges your world into a terrifying, rapidly spreading apocalypse. A malicious entity has breached the Overworld, corrupting the land, mutating the wildlife, and twisting familiar faces into horrific monsters. Will you find a way to cleanse the…
Official listing
- Modrinth page
- modrinth.com/mod/infected-world
- Owner
- Bendi_GamingOfficial
- Published
- 2026-06-25
- Updated on Modrinth
- 2026-08-20
- Facts verified
- 2026-10-15