ModsJava
Fallen Lib Mod (1.20.1) – Run Custom Apotheosis Gems and Smooth Code Patches
Java mod listed for Minecraft 1.20. Downloads from the MC Java Mods app on Android.
⬇ DownloadFallen Lib Mod provides runtime tools and patch systems for Minecraft mod development. It helps other mods modify game code cleanly without clashing with base files. When running alongside the Apotheosis mod on version 1.20.1, it also lets creators add extra gem bonuses using data packs. Players typically install this library to support other mods that depend on its backend features.
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Features:
- Provides runtime utilities and code patching tools for mod creation.
- Serves as a required base library for dependent gameplay mods.
- Allows data packs to register custom gem bonuses in Apotheosis.
Mod Patching Tools:
- FallenPatch hooks into exact classes or subclasses to reduce duplicate code adjustments.
- FallenInserter connects custom hook methods to inspect or replace method return values during runtime.
- Configuration files in JSON format manage required patches and version checks.
Runtime Utilities:
- ObjectModifierFactory copies objects and adjusts numeric fields without altering the original object.
- Delegated Mixin Connector Registry helps test conditional mixin setups directly in development workspaces.
Fallen Lib Mod Download Links
Quick facts
- Edition: Minecraft Java
- File type: .jar
- Minecraft version listed: 1.20.1
- How to install: Install the matching mod loader (Forge, Fabric or NeoForge) for your Minecraft version. → Download the .jar. → Put it in the .minecraft/mods folder and launch that loader profile.
- Where to get it: In MC Java Mods, or directly above on this page.
Install steps are the general flow for this file type — How to install Minecraft Java mods & modpacks walks through it step by step.
File checked by MCModsHub
- Downloads as 502696.mcaddon
- Download size: 313 KB
- Download link checked 23 Sept 2026 — working
- Mirrored on our own servers — the download does not depend on the original host
These come from our own check of the pack file, not from the source page.