Ultreon Modding Library Mod (1.21.1, 1.20.1) – Library for Ultreon Team's Mods
Java mod listed for Minecraft 1.20–1.21. Downloads from the MC Java Mods app on Android.
⬇ DownloadUltreon Modding Library Mod provides essential tools and utilities for Ultreon Team’s Mods.
Ultreon Modding Library Mod Download Links
For Minecraft 1.21.1, 1.21
NeoForge version: Download from Server 1 – Download from Server 2
Fabric version: Download from Server 1 – Download from Server 2
For Minecraft 1.20.4
Forge version: Download from Server 1 – Download from Server 2
Fabric version: Download from Server 1 – Download from Server 2
NeoForge version: Download from Server 1 – Download from Server 2
For Minecraft 1.20.1, 1.20
Forge version: Download from Server 1 – Download from Server 2
Fabric version: Download from Server 1 – Download from Server 2
For Minecraft 1.19.4
Forge version: Download from Server 1
Fabric version: Download from Server 1
For Minecraft 1.19.3
Forge version: Download from Server 1
Fabric version: Download from Server 1
For Minecraft 1.19.2
Forge/Fabric version: Download from Server 1
For Minecraft 1.16.5
Forge version: Download from Server 1
- Edition: Minecraft Java
- File type: .jar
- Minecraft versions listed: 1.21.1, 1.20.1, 1.21
- 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.
- Downloads as 200556.mcaddon
- Download size: 42.4 MB
- Download link checked 29 Jul 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.