ModsFinder

The Rot

by M4id Studios

The Rot is an alpha Fabric mod that starts an infection in a Minecraft world, modeled on the rot from Rain World.

FabricClient and serverCustom license1.20.1 – 1.21.1

What it does

Infection starts when a player, in Creative Mode, right-clicks a block with the Cursor Wand, and from there the rot begins to spread through the world on its own. The author warns that the mod can almost certainly destroy a world, so testing should be done on a backup or a disposable world.

Every player and the server need a copy of the mod. Files are published for Fabric only, for 1.20.1 and 1.21.1. The latest Fabric file is 0.1.0-alpha.0 for 1.21.1, released 2026-05-17 on the alpha channel. Fabric API and Fabric Language Kotlin are required, and MidnightLib is bundled inside the mod. The author asks for attribution where the mod is used.

The license is custom and the code is not open source. Public links exist for the source code and the issue tracker. The author has said that a Neoforge version is planned for the next update, and that the project is still in heavy development with major changes and bugs expected. The author advises against using it in modpacks for now.

Key features

  1. Infection spread

    A rot begins in the world after a block is marked with the Cursor Wand, then spreads without further player input.

  2. Cursor Wand

    The wand is used in Creative Mode to start an infection at the chosen block.

  3. Rain World theme

    The rot is inspired by the infection of the Rain World game and reflects its look and feel.

  4. Alpha status

    The mod is in heavy development, so features and behavior may change between builds.

Compatibility

Latest build for each game version and loader.

No stable releases
Every published file is a beta or alpha build.
1.21.10.1.0-alpha.0
1.20.10.1.0-alpha.0
ReleaseBetaAlphaNot available

Only full game releases are shown. This mod publishes no snapshot builds.

Requirements

Dependencies declared by the latest file for each loader.

Required 2

Fabric Language KotlinThis is a mod that enables usage of the Kotlin programming language for Fabric mods.
Required
Fabric APILightweight and modular API providing common hooks and intercompatibility measures utilized by mods using the Fabric toolchain.
Required

Embedded 1

MidnightLibCommon library providing a lightweight configuration system
Embedded

Use cases

Testing in a disposable world

Because the mod can destroy a world, it is suited to trying out infection mechanics in a backup or throwaway save.

Who it’s for: Players who want to test an early, unfinished infection mod on Fabric 1.20.1 or 1.21.1, and who accept that bugs and major changes are expected.

Questions

Does The Rot need Fabric API?

Yes. Fabric API and Fabric Language Kotlin are both required dependencies, and the mod is published only for Fabric.

Does The Rot have to be installed on the server?

Yes. The server and every player need the mod installed.

Is The Rot available for Neoforge?

Not yet. The author has said that Neoforge support is planned for the next update, and early Neoforge builds are being looked at.

Can The Rot be used in modpacks?

The author advises against using it in modpacks for now, since the mod is still in alpha and major changes are expected.

In the catalog

The Rot is one of 7,555 Cursed mods on ModsFinder, and one of 4,235 Cursed mods for Fabric. 32,366 mods support Minecraft 1.21.1.

Cursed mods7,555Fabric modsMods for 1.21.132,366

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What the author says

Early Looks/Peaks Downloads Available In Discord. Attribution is appreciated, but not required!
M4id Studios, on the Modrinth page

Official listing

Owner
M4id Studios
Published
2025-07-20
Updated on Modrinth
2026-05-17
Facts verified
2026-10-15

Tags

Cursed
Open on ModrinthCompare