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Multi World Borders Mod for Minecraft 1.21.8

Makes world borders work per dimension

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Updated 18.10.2026

About the Multi World Borders mod

Fabric Server-Side mod.

Makes world borders work per dimension

How to install Multi World Borders

With Millida Launcher

  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 1.21.5–1.21.8 on Fabric or Quilt automatically.

  3. Launch the game

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

Manually

  1. Install Fabric or Quilt

    The loader must match the game version of the mod file, for example Minecraft 1.21.8. After installing it, a separate profile appears in your launcher.

  2. Download the file for your version

    In the version list above, pick the file multiworldborders-1.8.0-fabric-1.21.5.jar (31 KB) for your game version and loader.

  3. Put it in the mods folder

    The folder is inside .minecraft (Windows: %appdata%\.minecraft\mods). If it does not exist, create it.

  4. Launch the loader profile

    Open “Mods” in the main menu: Multi World Borders should be in the list.

Minecraft 1.21.8 runs on Java 21: with a different Java version the game may close right after launch.

Versions

With dependencies

MinecraftLoaderFileDateActions
1.21.5Fabric, Quilt1.8.030.5 KB

FAQ

Which Minecraft versions does Multi World Borders work on?

There are files for 1.21.8, 1.21.7, 1.21.6, 1.21.5. The newest is 1.21.8.

Is Multi World Borders for Forge or Fabric?

There are files for Fabric: 1.21.5–1.21.8 and for Quilt: 1.21.5–1.21.8. There are no files for Forge or NeoForge: a mod for another loader will not start.

Does Multi World Borders need other mods?

The author lists no required dependencies: the Fabric or Quilt loader is enough.

Which Java does Multi World Borders need?

Minecraft 1.21.8 runs on Java 21. If the game closes right after launch, the usual cause is the wrong Java version in the profile settings.

Where can I download Multi World Borders safely?

On this page: the file multiworldborders-1.8.0-fabric-1.21.5.jar (31 KB) is stored on Millida’s server, with no link shorteners. SHA-1 checksum: 5f4b2c5fe8d901c52ded1443696c430adccde973.

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