Prism

A Gradle plugin for multi-version, multi-loader Minecraft mod development in a single branch.

Prism wraps Fabric Loom, ModDevGradle, and MDG Legacy. You get full IDE support, run configurations, and all the features of the underlying plugins without managing multiple branches or complex build scripts.

What Prism does

• All versions and loaders in one branch, one build file
• Full IntelliJ run configurations per target
• Kotlin and Java support
• Mojang or Yarn mappings, Parchment
• Per-loader dependency blocks with Jar-in-Jar
• Custom run configurations with optional dev username
• CurseMaven and Modrinth Maven built in
• Version-aware datagen (split client/server for 1.21.4+)
• Handles unobfuscated Minecraft (26.x) automatically
• Auto-detects access wideners and access transformers
• Template variable expansion in metadata files
• CurseForge and Modrinth publishing with platform-specific dependencies
• Optional shared common across all versions for pure Java API code

Project layout

common/                          optional shared code (no Minecraft)
versions/
  1.20.1/
    common/src/main/java/        vanilla MC classes available
    fabric/src/main/java/        Fabric API available
    forge/src/main/java/         Forge API available
  1.21.1/
    common/src/main/java/
    fabric/src/main/java/
    neoforge/src/main/java/
  26.1/
    common/src/main/java/
    fabric/src/main/java/
    neoforge/src/main/java/

Supported loaders

Loader	Plugin used	Minecraft versions
Fabric	Fabric Loom	Any
NeoForge	ModDevGradle	1.20.2+
Forge	ModDevGradle Legacy	1.17 - 1.20.1
Legacy Forge	RetroFuturaGradle	1.7.10 - 1.12.2

Next steps

Use the Prism Mod Template to get started in seconds, or read Getting Started for manual setup.