CurseForge · Minecraft mod
The Underworld dimension
A simple mod that adds a new dimension, new ores, new tools, weapons, and armor, as well as various features.
Quick answer
Which The Underworld dimension release should I use?
The Underworld dimension the_underworld-beta5-forge-1.20.1.jar targets 1.20.1 with Forge. The project page does not say whether this file belongs on the client, dedicated server, or both. No extra mods listed for this file.
Where it goes
Is The Underworld dimension required on the client, server, or both?
The project page does not say whether this file belongs on the client, dedicated server, or both.
The source does not explicitly classify this release as client-only or server-only.
What else does The Underworld dimension the_underworld-beta5-forge-1.20.1.jar need?
the_underworld-beta5-forge-1.20.1.jar. Change the file and its required mods may change too.
This file does not list any required mods. Do not add a library just because a different file uses it.
This file does not list any required or optional mods.
Before you install it
Add The Underworld dimension without breaking your instance.
Built for The Underworld dimension the_underworld-beta5-forge-1.20.1.jar. Pick another file and the loader, install side or required mods may change.
- 01
Stick to this file
Use the_underworld-beta5-forge-1.20.1.jar. It targets 1.20.1 with Forge; another release may have different loader, side or dependency requirements.
- 02
Bring the mods it needs
This file does not list any required mods. Do not add a library just because a different file uses it.
- 03
Put it on the correct side
The project page does not say whether this file belongs on the client, dedicated server, or both.
- 04
Pick the file you checked
Use the “Get this file” button beside the_underworld-beta5-forge-1.20.1.jar. It opens that exact file at the source.
About this project
What does The Underworld dimension add?
This mod add :
-a new dimension
-a new structure
-new mob
-topaz, lavanite and onyx tools, weapons and armors
-onyx stuff have specials abilities
-redstone gun
-and more...
The mod is now translate in English but only since the beta 3.
Project description from CurseForge.
Pick your setup
The Underworld dimension by Minecraft version and loader
Choose the version and loader you play, then open the matching release.
Check the dependencies, then try the file in a copied instance before changing a world you care about.
Recent files
The Underworld dimension versions and loaders
the_underworld-beta5-forge-1.20.1.jar
1 Sept 2026
the_underworld-beta4-forge-1.20.1.jar
31 Aug 2026
the_underworld-beta3-forge-1.20.1.jar
28 Aug 2026
the_underworld-beta2-forge-1.20.1.jar
28 Aug 2026
the_underworld-beta1-forge-1.20.1.jar
28 Aug 2026
Looking for an older file? The official CurseForge project page is in Resources.