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适用于 Minecraft 1.20.1, 1.21.1 的 Universal Mod Core

用于跨版本 Minecraft 模组的核心库

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已更新 01.11.2026

关于 Universal Mod Core 模组

Welcome to the Future

Universal Mod Core allows developers to build mods against a stable API that is Minecraft agnostic.

In the past UMC has been packaged directly with ImmersiveRailroading as it is was the only mod using it. Now that the API is reasonably stable, it can be published as it's own mod. This mod contains the logic for each Minecraft Version / Loader that it exposes in a simplified way to child mods.

TODO:

  • Support for fabric
  • Example project repo
  • Contributing guide

如何安装 Universal Mod Core

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 1.12.2–1.21.4 on Forge or NeoForge automatically.

  3. Launch the game

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

Manually

  1. Install Forge or NeoForge

    The loader must match the game version of the mod file, for example Minecraft 1.21.4. 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 UniversalModCore-1.21.4-neoforge-1.3.1.jar (876 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: Universal Mod Core should be in the list.

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

版本

含依赖项

Minecraft加载器文件日期操作
1.21.4NeoForgeUniversalModCore-1.21.4-neoforge-1.3.1876 KB
1.21.1NeoForgeUniversalModCore-1.21.1-neoforge-1.3.1885 KB 1
1.20.1ForgeUniversalModCore-1.20.1-forge-1.3.12.6 MB 6
1.12.2—UniversalModCore-1.12.2-forge-1.0.1.jar408 KB 3

常见问题

Which Minecraft versions does Universal Mod Core work on?

There are files for 1.21.4, 1.21.1, 1.20.1, 1.12.2. The newest is 1.21.4.

Is Universal Mod Core for Forge or Fabric?

There are files for Forge: 1.20.1 and for NeoForge: 1.21.1–1.21.4. There are no files for Fabric: a mod for another loader will not start.

Does Universal Mod Core need other mods?

The author lists no required dependencies: the Forge or NeoForge loader is enough.

Which Java does Universal Mod Core need?

Minecraft 1.21.4 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 Universal Mod Core safely?

On this page: the file UniversalModCore-1.21.4-neoforge-1.3.1.jar (876 KB) is stored on Millida’s server, with no link shorteners. SHA-1 checksum: 483372f600311b7758ecda0bc3d0d8e5295bfafb.

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