Infested World
by OddSense
Infested World turns blocks in an existing world into Silverfish-infested blocks, so breaking them releases Silverfish as in vanilla.
What it does
Block breaks spawn Silverfish in the way vanilla infested blocks do, and the mod applies this to blocks already present in a world. Hitting a Silverfish makes one to three more emerge, so fighting them is an option, but leaving them alone lets the infestation spread and slowly destroy more of the world. The mod is server-side only, so players join without installing it, and it targets Fabric for 1.21.11 with the MIT License, not open source.
Key features
Infested blocks in existing worlds
Blocks already placed in a world can be infested, so the change reaches terrain that has already been generated.
Silverfish on block break
Breaking an affected block spawns Silverfish, matching how vanilla infested blocks behave.
Spreading Silverfish
Each Silverfish hit releases one to three more, so the infestation grows and can slowly erode the surroundings.
Gallery
Compatibility
Latest build for each game version and loader.
Only full game releases are shown. This mod publishes no snapshot builds.
How it compares
Craftable Infested Stones & Glow Lichen adds craftable infested blocks and runs on Fabric, Forge, NeoForge and Quilt for 1.21 – 1.21.11, with the server required and the client optional. Infested Netherrack & End Stone also targets Fabric and Quilt, for 1.20.1 – 1.21.11 with both sides needing it.
| Mod | Loaders | Game versions | Environment | Updated |
|---|---|---|---|---|
| Infested World | Fabric | 1.21.11 | Server-side only | 2026-06-10 |
| Craftable Infested Stones & Glow Lichen | Fabric, Forge, NeoForge and Quilt | 1.21 – 1.21.11 | Server required, client optional | 2026-04-24 |
| Infested Netherrack & End Stone | Fabric and Quilt | 1.20.1 – 1.21.11 | Client and server | 2025-12-06 |
Questions
Does Infested World need to be installed on the client?
In the catalog
Infested World is one of 7,555 Cursed mods on ModsFinder, and one of 4,235 Cursed mods for Fabric. 19,862 mods support Minecraft 1.21.11.
More from OddSense
Similar mods
What the author says
Makes every block you break spawn a Silverfish, just like a Vanilla infested block would, however in this case, the block will still drop. Hitting a Silverfish will make 1-3 more Silverfish emerge from blocks, slowly destroying the world the more you try and fight them.
Official listing
- Modrinth page
- modrinth.com/mod/infested-world
- Owner
- OddSense
- Published
- 2026-06-10
- Updated on Modrinth
- 2026-06-10
- Facts verified
- 2026-10-15