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Regions Unexplored

Regions Unexplored adds dozens of new biomes to Minecraft Java's Overworld and Nether, from Chalk Cliffs and towering Redwood Forests above ground to vivid Prismachasms and Blackstone Basins below. Requires Lithostitched. Supports Fabric, Forge, NeoForge, and Quilt.

By Apollo via Modrinth.

Wisteria Grove biome from Regions Unexplored with the mod logo in the foreground
Section
Java Mod
Platform
Java
Versions
v 1.18.2 / 1.19.2 / 1.19.4 / 1.20 / 1.20.1 / 1.20.2 / 1.20.4 / 1.21 / 1.21.1
Last checked
Updated
Saguaro Desert biome in Regions Unexplored with tall cactus formations under a warm sky
Saguaro Desert biome in Regions Unexplored with tall cactus formations under a warm sky
Redstone Caves underground biome in Regions Unexplored with glowing redstone formations
Redstone Caves underground biome in Regions Unexplored with glowing redstone formations
Chalk Cliffs biome in Regions Unexplored featuring white stone formations and dramatic terrain
Chalk Cliffs biome in Regions Unexplored featuring white stone formations and dramatic terrain
Fungal Fen biome in Regions Unexplored with oversized mushroom vegetation and murky water
Fungal Fen biome in Regions Unexplored with oversized mushroom vegetation and murky water
Redwoods biome in Regions Unexplored featuring towering redwood trees with a forest floor below
Redwoods biome in Regions Unexplored featuring towering redwood trees with a forest floor below
Prismachasm biome in Regions Unexplored showing a vivid prismatic canyon with colorful stone walls
Prismachasm biome in Regions Unexplored showing a vivid prismatic canyon with colorful stone walls
Joshua Desert biome in Regions Unexplored with distinctive Joshua trees and arid terrain
Joshua Desert biome in Regions Unexplored with distinctive Joshua trees and arid terrain
Blackwood Forest biome in Regions Unexplored with dark-barked trees forming a dense canopy
Blackwood Forest biome in Regions Unexplored with dark-barked trees forming a dense canopy
Blackstone Basin biome in Regions Unexplored, a Nether environment with blackstone terrain
Blackstone Basin biome in Regions Unexplored, a Nether environment with blackstone terrain

Regions Unexplored is a worldgen mod for Minecraft Java Edition that fills the Overworld and Nether with a wide variety of new biomes. You will encounter towering Redwood Forests, stark Chalk Cliffs, and arid Saguaro Deserts above ground, along with underground Redstone Caves and Prismachasms, and Nether-native environments like the Blackstone Basin. The mod requires Lithostitched and must be installed on both the client and the server.

Biomes Added

Regions Unexplored spans multiple climate zones across two dimensions. Below is a selection of what the mod introduces:

  • Overworld (surface): Wisteria Grove, Saguaro Desert, Joshua Desert, Chalk Cliffs, Redwoods, Blackwood Forest, Fungal Fen
  • Overworld (underground): Redstone Caves, Prismachasm
  • Nether: Blackstone Basin and additional Nether variants

How to Install Regions Unexplored

  1. 1.Install a supported mod loader for your Minecraft version: Fabric, Forge, NeoForge, or Quilt.
  2. 2.Download Lithostitched from Modrinth for the same loader and Minecraft version. It is a required dependency.
  3. 3.Download Regions Unexplored from Modrinth, matching loader and version.
  4. 4.Place both .jar files in the mods/ folder of your game instance.
  5. 5.On a server, install both Lithostitched and Regions Unexplored server-side. The mod requires both sides.

Loader and Version Compatibility

  • Supported loaders: Fabric, Forge, NeoForge, Quilt
  • Supported Minecraft versions: 1.18.2, 1.19.2, 1.19.4, 1.20, 1.20.1, 1.20.2, 1.20.4, 1.21, 1.21.1
  • Required dependency: Lithostitched (download from Modrinth, matching your loader and MC version)
  • Side: both client and server must have the mod installed
  • Compatibility with other worldgen mods varies; check the Regions Unexplored GitHub and Discord for tested combinations

Questions about this entry.

  • How do I install Regions Unexplored?

    Download Regions Unexplored and its required dependency Lithostitched from Modrinth, selecting the file that matches your mod loader (Fabric, Forge, NeoForge, or Quilt) and Minecraft version. Place both .jar files in your mods/ folder. If you play on a server, both mods must be installed there as well.

  • Does Regions Unexplored work with Fabric?

    Yes. Regions Unexplored supports Fabric, Forge, NeoForge, and Quilt. For Fabric, download the Fabric-specific builds of both Regions Unexplored and Lithostitched from Modrinth. The mod does not require Fabric API separately.

  • Is Regions Unexplored compatible with other biome mods like Biomes O' Plenty or Terralith?

    Compatibility with other worldgen mods varies by version and load order. Some combinations work well; others cause conflicts. Check the Regions Unexplored GitHub issues and community Discord for an up-to-date list of tested mod combinations before mixing biome mods.

  • Does Regions Unexplored work on multiplayer servers?

    Yes, and the server must have it installed. Regions Unexplored is a worldgen mod that modifies terrain, so both client and server need the mod and Lithostitched at the same version. Without a server-side install, clients with the mod cannot join.

  • Which Minecraft version does Regions Unexplored support?

    Regions Unexplored has releases for Minecraft 1.18.2, 1.19.2, 1.19.4, 1.20, 1.20.1, 1.20.2, 1.20.4, 1.21, and 1.21.1. Check the Modrinth page for the latest available build for your version.

Related resources.