Modrinth · Minecraft mod

Unstable Underworld

This datapack is inspired by the Unstable Underworld and adds the Unstable Underworld below the nether. There is no nether bedrock.

Choose a version Pick your version below, then grab the matching file.

Quick answer

Which Unstable Underworld release matches 26.3?

Updated last month

Best match for your filters 1+mod

Game version 1.21.10, 1.21.11, 1.21.5

Loader Fabric, Forge, NeoForge

Unstable Underworld 1+mod targets 1.21.10, 1.21.11, 1.21.5 with Fabric, Forge, NeoForge. Installation on the client is optional. Installation on the dedicated server is optional. No extra mods listed for this file.

Where it goes

Is Unstable Underworld required on the client, server, or both?

Installation on the client is optional. Installation on the dedicated server is optional.

Client Optional

Dedicated server Optional

Loader for this release Fabric, Forge, NeoForge

Required install it here Optional supported, not mandatory Not supported do not install here Source doesn’t say do not assume

The source marks this as usable on both the client and server.

Understand client and server requirements Read the Minecraft installation guide

What else does Unstable Underworld 1+mod need?

1+mod on 26.3. Every mod below is checked against that same setup.

No extra mods listed for this file

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 Unstable Underworld without breaking your instance.

Built for Unstable Underworld 1+mod on 26.3. Pick another file and the loader, install side or required mods may change.

01
Stick to this file

Use 1+mod. It targets 1.21.10, 1.21.11, 1.21.5 with Fabric, Forge, NeoForge; 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

Installation on the client is optional. Installation on the dedicated server is optional.
04
Pick the file you checked

Use the “Get this file” button beside 1+mod. It opens that exact file at the source.

About this project

What does Unstable Underworld add?

This Datapack adds the unstable inspired Underworld Dimension to minecraft.

Below the nether, if you dig, you will not find bedrock. Instead, you will find void, And that void, that void will lead to The Underworld!

Now, will you make your leap into the unknown or will you stay away because you are scared?
(Credits to the Unstable SMP)

Features --

Entry

You must dig down, you won't find bedrock and there will be void, when you fall down, you will not take fall damage or die to the void, instead, you will go to The Underworld.

Exit

You must make a nether portal, that nether portal must be a perfect nether portalNether Portal Image

You must make a nether portal with 5 obsidain height and 4 on the bottom oresle it will not work.

Biomes

There is 5 new biomes in the underworld.
All were seen in videos by the Unstable Creators.

Project description from Modrinth.

Pick your setup