ModsFinder

Underground Dimension

by The New Life Plus

Underground Dimension is a server-side world generation mod that adds an underground dimension of interconnected caves for players to explore.

FabricForgeNeoForgeQuiltServer required, client optionalAll rights reserved1.21 – 1.21.5

What it does

The mod adds a new underground dimension built from caves that connect to one another, reached by a teleport command. Servers run it, and players may add it on the client, so only the server strictly needs it. Files are published for Fabric, Forge, NeoForge and Quilt, covering 1.21 – 1.21.5, and the mod is released under All rights reserved, so it is not open source.

Key features

  1. Underground dimension

    A separate dimension lies beneath the surface, where players explore subterranean landscapes and cave systems.

  2. Interconnected caves

    Caves in the dimension link to each other, making a network of passages to travel and search.

  3. Teleport access

    A teleport command moves players into the underground dimension, so they can enter it directly.

Compatibility

Latest build for each game version and loader.

1.21.51.1.0+mod1.1.0+mod1.1.0+mod1.1.0+mod
ReleaseBetaAlphaNot available

Only full game releases are shown. This mod publishes no snapshot builds.

How it compares

Full comparison

Astral Plane Dimension is open source under the GNU General Public License v3.0 or later and is built for 1.21.4, while Underground Dimension covers 1.21 – 1.21.5 under All rights reserved. Deep Underground (Mining Dimension) is an open source Fabric mod under the MIT License for 1.21.1, and Caves Everywhere is a client and server mod for 1.21.1 under All rights reserved.

ModLoadersGame versionsEnvironmentUpdated
Underground DimensionFabric, Forge, NeoForge and Quilt1.21 – 1.21.5Server required, client optional2025-05-31
Astral Plane DimensionFabric, Forge, NeoForge and Quilt1.21.4Server required, client optional2025-01-03
Deep Underground (Mining Dimension)Fabric1.21.1Client and server2026-03-25
Caves EverywhereFabric, Forge and NeoForge1.21.1Client and server2026-10-11

Questions

Does Underground Dimension need to be installed on the client?

Not necessarily. Either side can run the server, and players can join without the mod, so installing it on the server alone is enough.

In the catalog

Underground Dimension is one of 8,515 World generation mods on ModsFinder, and one of 4,027 World generation mods for Fabric. 15,307 mods support Minecraft 1.21.5.

World generation mods8,515Fabric modsMods for 1.21.515,307

More from The New Life Plus

All projects
Orb Booster1.20.1 – 26.2Binding Enchantment1.21 – 26.2Warranty1.21 – 26.2Tunneler Enchantment1.18 – 1.21.11Excavator1.21.5Quary1.21.5

Similar mods

Biomes O' Plenty1.7.10 – 26.3Cobblemon1.19.2 – 1.21.1Terralith1.18.2 – 26.3YUNG's Better Nether Fortresses1.18.2 – 26.1.2Dungeons and Taverns1.19 – 26.3Yeetus Experimentus1.18.2 – 26.3

What the author says

# Underground Dimension This datapack adds an expansive underground dimension, with a network of interconnected caves. This unique environment offers a fresh and challenging experience for players who love spelunking and exploring subterranean landscapes. Use /execute in honbar:underground run tp ~ ~ ~ to teleport to…
The New Life Plus, on the Modrinth page

Official listing

Owner
The New Life Plus
Published
2024-09-24
Updated on Modrinth
2025-05-31
Facts verified
2026-10-15

Tags

AdventureGame mechanicsWorld generation
Open on ModrinthCompare