mod
The UnderworldMinecraft mod for 1.21.11
Explore the vast strangeness of The Underworld dimension, with mobs, biomes, ores and everything you can imagine!
- Latest version
- 1.4.1
- Minecraft
- 1.21.8 to 1.21.11
- Java
- Java 21+
- Loader
- Fabric
- Licence
- LicenseRef-All-Rights-Reserved
- Downloads
- 163
- Updated
- 12 d ago
- Available on
- Modrinth
PartnerHost The Underworld servers
One click and The Underworld is installed with the right loader, on hardware built for it.
- 1.21.11
- Fabric
- One click mod install
- Loader matched for you
- Ryzen CPUs
- NVMe SSD
Screenshots
Click a screenshot to open it. Screenshots are served from the author’s own host and belong to them.
Minecraft versions
Every version The Underworld declares support for, newest first, with the Java runtime that version needs.
Download
From The Underworld’s own host. Nothing is re-hosted here.
The Underworld-1.4.1-fabric-1.21.8.jar · 1.4 MB · for 1.21.8, 1.21.9, 1.21.10, 1.21.11
7112e14e90df…Older versions5Hide older versions
- 1.4.021 Jul 20261.21.8, 1.21.9, 1.21.10, 1.21.111.3 MB19 downloads
69f703ac21b1…Get - 1.3.028 Jun 20261.21.8, 1.21.9, 1.21.10, 1.21.111.3 MB86 downloads
519d4e242a4e…Get - 1.122 Jun 20261.21.80.7 MB26 downloads
cc83dca75906…Get - 1.0.015 Jun 20261.21.8, 1.21.9, 1.21.10, 1.21.110.7 MB37 downloads
1692022b15bc…Get - alpha-0.1.013 Jun 20261.21.8, 1.21.9, 1.21.10, 1.21.110.7 MB11 downloads
a56fa8de860c…Get
Frequently asked
Does The Underworld work on Minecraft 1.21.11?
Yes. 1.21.11 is the newest Minecraft version The Underworld declares support for, and the claim comes from the author's own release metadata rather than from a compatibility list somebody maintains by hand.
Which Minecraft versions does The Underworld support?
Everything the author has declared, from 1.21.8 up to 1.21.11. The full list is in the table above, with the Java runtime each version needs next to it.
Do I need to install The Underworld on the client or the server?
Both. Every player needs it installed and so does the server, so anyone joining without it will be refused.
Which loader does The Underworld need?
Fabric. A build for one loader will not load on another, so this is the first thing to check before the Minecraft version.
Which Java version do I need for The Underworld?
Java 21 or newer, because that is what the newest Minecraft release it supports requires. The requirement comes from the game rather than from the mod itself.
What licence is The Underworld under?
LicenseRef-All-Rights-Reserved, as stated by the author on the platform we synced it from. Check the project's own page before redistributing or bundling it.
How do I install The Underworld?
Install the matching loader first, then put the downloaded file in your mods folder and start the game. The loader, the mod and Minecraft all have to be on the same version, which is the usual reason a mod does not appear in game.
Where do I download The Underworld safely?
From the author's own page on Modrinth, which is where the data here is synced from. MCReference never mirrors, re-hosts or repackages a file: every download button points at the original source, so you get exactly what the author published.
Works on the same versions
Ordered by how much of the recent Minecraft version coverage overlaps, not by popularity.
Is this information wrong or missing something? .