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Expanded World Mod for Minecraft 1.21.1, 1.21

Expanded World enhances your Minecraft experience by extending the world height, introducing custom caves, structures, and vegetation. Explore new depths and heights in your Minecraft worlds with this mod!

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2 downloads
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Updated
Updated 18.10.2026
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Notice

Please be advised that there is currently an issue affecting ore generation across all versions, resulting in fewer ores than intended. A fix is actively being worked on and will be implemented as soon as possible. Thank you for your patience and understanding.

Expanded World — screenshot 3

Expanded World Mod/Datapack

<details> <summary>Compatibility</summary>

Expanded World — screenshot 4

not compatible with

  • Terralith </details>

Description

Expanded World is a Minecraft Mod and Datapack that extends the world's vertical limit from 384 to 640 blocks (-128 to 512) and introduces bespoke cave systems across multiple biomes. Alongside, it integrates custom vanilla-style structures and enhances the game's generation and vegetation mechanics.

Installation

Datapack Installation

Installing the datapack follows the standard procedure. Prior to installation or updating, it's advisable to create backups of your worlds.

Mod Installation

Expanded World can also function as a mod for Forge, NeoForge, and Fabric. Refer to the specific installation guidelines provided for each respective mod loader.

Features

  • Elevates the world height to a minimum of Y: -128 and maximum of Y: 512
  • Introduces tailored cave systems across various biomes, including ice, snow, desert, jungle, swamp, and badlands
  • Augments vegetation in swamp and birch forests, and introduces fallen trees within forests and taigas
  • Expands vanilla village and pillager outpost placements across diverse biomes
  • Introduces new village variants in badlands, swamp, dark forest, and jungle
  • Adds a novel structure: small camps featuring tents and campfires

How to install Expanded World

  1. Install Millida Launcher

    The launcher is free: download it at millida.net/launcher and sign in with any nickname.

  2. Click “Install” on this page

    The launcher opens and installs the mod for Minecraft 1.20.6–1.21.4 on Fabric, Forge, NeoForge or Quilt automatically.

  3. Launch the game

    A profile with it appears in the launcher: click “Play”.

Minecraft 1.21.4 runs on Java 21: with a different Java version the game may close right after launch.

Versions

With dependencies

MinecraftLoaderFileDateActions
1.21Fabric, NeoForge, Forge, QuiltExpandedWorld v1.4.01.3 MB 2

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