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Underground Worlds

Underground Worlds

Adds underground biomes and underground dungeons, as well as some above ground structures, in a modular and configurable way.

1.79M
307
Adventure
Equipment
World Generation

Compatibility

Minecraft: Java Edition

1.21.1
1.20.1–1.20.4
1.19.4

Platforms

Fabric
Forge
NeoForge

Supported environments

Client and server

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Links

Report issues View source Visit wiki

Creators

HexagonNico
HexagonNico Owner

Details

Licensed CC-BY-NC-ND-4.0
Published 2 years ago
Updated 3 weeks ago
DescriptionGalleryChangelogVersions

Show all versions

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Underground Worlds 21.10.0

by HexagonNico on Nov 22, 2025
Download

Underground Worlds 21.10.0

by HexagonNico on Nov 22, 2025
Download

Underground Worlds 21.10.0

by HexagonNico on Nov 22, 2025
Download

Ported mod to 1.21.10

New Additions

  • Added the "Archives" structure
    • Can be found underground under most biomes
    • Contains adventure maps that lead to the other dungeons of the mod
    • Contains a new music disc
    • Illusioners can be found here
  • Added explorer maps
    • Can be found in the Archives, in the jungle treehouse, and in the chillager outpost
    • They lead to the major dungeons
  • Added a new music disc
    • Found in the Archives

Underground Worlds 21.8.2

by HexagonNico on Nov 22, 2025
Download

Underground Worlds 21.8.2

by HexagonNico on Nov 22, 2025
Download

Underground Worlds 21.8.2

by HexagonNico on Nov 22, 2025
Download

New Additions

  • Added the "Archives" structure
    • Can be found underground under most biomes
    • Contains adventure maps that lead to the other dungeons of the mod
    • Contains a new music disc
    • Illusioners can be found here
  • Added explorer maps
    • Can be found in the Archives, in the jungle treehouse, and in the chillager outpost
    • They lead to the major dungeons
  • Added a new music disc
    • Found in the Archives

Underground Worlds 21.8.1

by HexagonNico on Nov 19, 2025
Download

Underground Worlds 21.8.1

by HexagonNico on Nov 19, 2025
Download

Underground Worlds 21.8.1

by HexagonNico on Nov 19, 2025
Download

New additions

  • Added compatibility with Accessories
    • Works as an alternative to Curios

Underground Worlds 21.8.0

by HexagonNico on Oct 5, 2025
Download

Underground Worlds 21.8.0

by HexagonNico on Oct 5, 2025
Download

Ported mod to Minecraft 1.21.8

Changes

  • The Underground Tundra now contains less snow
  • The Underground Desert now also contain patches of dripstone

New additions

  • Added abandoned lodges that can rarely spawn in the Underground Tundra
  • Added a "winter armor" found in the lodges of the Underground Tundra

Cross compatibility

  • Added cross compatibility with Variants & Ventures

Underground Worlds 21.8.0

by HexagonNico on Oct 5, 2025
Download

Ported mod to Minecraft 1.21.8

Changes

  • The Underground Tundra now contains less snow
  • The Underground Desert now also contain patches of dripstone

New additions

  • Added abandoned lodges that can rarely spawn in the Underground Tundra
  • Added a "winter armor" found in the lodges of the Underground Tundra

Cross compatibility

  • Added cross compatibility with Variants & Ventures

undergroundworlds-neoforge-21.4.0

by HexagonNico on May 30, 2025
Download

undergroundworlds-fabric-21.4.0

by HexagonNico on May 30, 2025
Download

undergroundworlds-forge-21.4.0

by HexagonNico on May 30, 2025
Download

undergroundworlds-neoforge-21.1.0

by HexagonNico on May 30, 2025
Download

undergroundworlds-fabric-21.1.0

by HexagonNico on May 30, 2025
Download

Project ugpraded to include content from my other mods

undergroundworlds-forge-1.21.1

by HexagonNico on May 30, 2025
Download

Project upgraded to include content from my other mods

Underground Jungle - 20.3.2 Forge

by HexagonNico on Apr 16, 2024
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Patch 20.3.3

Fixes:

  • Fixed crash caused by the biome music

Release 20.3.2

Changes:

  • Changed the texture of the Axe of Regrowth.
  • The Axe of Regrowth now replants saplings on the same block that was broken instead of the one below.
  • If Woodworks or Quark are installed, the chests in the temple will be replaced with jungle chests.

Release 20.3.1

Main changes:

  • Phantom Library is no longer required. It was a fun experiment, but it only made things more likely to crash.

Additions:

  • Jungle spores can now be collected from jungle vines.
  • Added the Axe of Regrowth, an axe that can replant saplings when chopping down trees.
  • Added the Blade of the Jungle, a sword that has a 10% chance to inflict poison on hit.
  • Amethyst geodes in the underground jungle have been replaced with "honey geodes".

Changes:

  • Changed the texture of the temple key to match the upcoming trial key.

Fixes:

  • Fixed crash when generating giant mushrooms underground.

Release 20.3.0

Main changes:

  • Underground Jungle now requires the Phantom Library.
  • The version number now follows the convention <minecraftMajor>.<minecraftMinor>.<modVersion>. That means version 20.3.0 is the first version for Minecraft 1.20.3.

Additions:

  • Added ru_ru language

Fixes:

  • Fixed the biome generating on the surface when TerraBlender is installed (for real this time... I hope)
  • Fixed crashes in versions past 1.20.2

Underground Jungle - 20.1.2 Forge

by HexagonNico on Apr 16, 2024
Download

Patch 20.1.3

Fixes:

  • Fixed crash due to wrongly configured music in the biome

Release 20.1.2

Changes:

  • Changed the texture of the Axe of Regrowth.
  • The Axe of Regrowth now replants saplings on the same block that was broken instead of the one below.
  • If Woodworks or Quark are installed, the chests in the temple will be replaced with jungle chests.

Release 20.1.1

Main changes:

  • Phantom Library is no longer required. It was a fun experiment, but it only made things more likely to crash.

Additions:

  • Jungle spores can now be collected from jungle vines.
  • Added the Axe of Regrowth, an axe that can replant saplings when chopping down trees.
  • Added the Blade of the Jungle, a sword that has a 10% chance to inflict poison on hit.
  • Amethyst geodes in the underground jungle have been replaced with "honey geodes".

Changes:

  • Changed the texture of the temple key to match the upcoming trial key.

Fixes:

  • Fixed crash when generating giant mushrooms underground.

Release 20.1.0

Main changes:

  • Underground Jungle now requires the Phantom Library.
  • The version number now follows the convention <minecraftMajor>.<minecraftMinor>.<modVersion>. That means version 20.1.0 is the first version for Minecraft 1.20.1.

Additions:

  • Added ru_ru language

Fixes:

  • Fixed the biome generating on the surface when TerraBlender is installed (for real this time... I hope)
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