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Slimefun4 continued for modern Paper servers, preserving classic gameplay, machines, items, and addon support.

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๐Ÿงชโšก SLIMEFUN LEGACY โšก๐Ÿงช

๐Ÿ’š The Classic Slimefun Experience. Rebuilt for Modern Minecraft!

๐Ÿญ BUILD BIGGER โ€ข โšก POWER EVERYTHING โ€ข ๐Ÿ”ฎ MASTER MAGIC โ€ข ๐Ÿš€ AUTOMATE YOUR WORLD


๐ŸŒŽ TURN YOUR MINECRAFT SERVER INTO A TECHNOLOGICAL WONDERLAND!

Ever wanted the excitement of a massive Minecraft technology modpack without making your players install dozens of mods?

Welcome to Slimefun Legacy! ๐Ÿ’š

Slimefun Legacy is an independently maintained continuation of the legendary Slimefun 4, bringing hundreds of custom items, incredible machines, powerful energy systems, automation, magic, and countless possibilities to modern Minecraft servers!

Transform an ordinary survival world into an industrial empire, an automated factory, or a laboratory of magical discoveries.

โœจ All through a server-side plugin โ€” no client-side mods required!

Whether you're a newcomer discovering your first magical gadget or an experienced engineer constructing enormous automated factories, Slimefun Legacy brings something for everyone.


โš™๏ธ EXPLORE A WORLD OF POSSIBILITIES!

๐Ÿญ Advanced Machines & Automation

Turn raw resources into technological masterpieces!

  • ๐Ÿ”ง Build powerful industrial machines and processing systems
  • โš™๏ธ Automate crafting, smelting, and resource production
  • ๐Ÿ“ฆ Transport materials through Cargo networks
  • ๐Ÿ—๏ธ Design complex factories with interconnected equipment
  • ๐Ÿš€ Expand your production with compatible automation addons

โšก Electricity & Power Generation

Your machines need energy. How will you generate it?

  • ๐Ÿ”‹ Produce, store, and distribute electricity
  • โ˜€๏ธ Harness different energy sources
  • โ˜ข๏ธ Experiment with advanced reactors
  • ๐Ÿ”Œ Build interconnected electrical systems
  • ๐Ÿ’ก Engineer increasingly sophisticated power infrastructure

๐Ÿ”ฎ Magic, Gadgets & Adventure

Not everything in Slimefun is powered by electricity!

  • โœจ Discover magical equipment and mysterious items
  • ๐Ÿช„ Experiment with special tools and useful gadgets
  • ๐Ÿ›ก๏ธ Craft equipment with unique abilities
  • ๐ŸŽ’ Explore backpacks and portable storage
  • ๐Ÿ“– Unlock new technologies through Slimefun research

๐Ÿ“š Powerful Slimefun Guide

Your personal encyclopedia of science and magic!

  • ๐Ÿ”Ž Search for items and recipes
  • ๐Ÿ“– Browse machines, materials, and technologies
  • โญ Bookmark useful discoveries
  • ๐Ÿ”„ Explore crafting recipes and item uses
  • ๐Ÿงฐ Enjoy additional guide features through compatible addons such as JustEnoughGuide

From your first basic machine to an enormous industrial complex, there's always something new to discover!


๐Ÿ”Œ A MASSIVE ADDON ECOSYSTEM!

๐Ÿš€ One Plugin. Endless Expansion.

Slimefun Legacy is more than just a standalone plugin.

It maintains compatibility with the established Slimefun 4 ecosystem while supporting a growing collection of updated Legacy addons.

Expand your experience with projects such as:

Addon Experience
โšก Networks Advanced item networks and storage automation
๐Ÿญ InfinityExpansion2 Industrial expansion, resource processing, and technology
๐Ÿ”ฎ DynaTech Additional machines and engineering
๐Ÿ› ๏ธ FluffyMachines Useful machines, tools, and equipment
๐Ÿ’Ž Supreme Advanced materials, equipment, and processing
๐Ÿ“– JustEnoughGuide Enhanced recipe browsing and guide features
๐Ÿงฌ GeneticChickenEngineering Additional resource and production mechanics
๐Ÿ€ LuckyBlocks Randomized rewards and surprises
๐Ÿš€ Galactifun Space-themed technology and exploration

๐Ÿ“ฆ An optional curated addon bundle is available through Slimefun Legacy's GitHub releases!

The maintained release ecosystem includes a coordinated collection of 45 addon JARs, with continuing compatibility improvements.

Addons are installed separately. Individual addon requirements and supported versions may vary.

๐Ÿ“š Browse the Slimefun Legacy Addon Wiki


๐Ÿ›ก๏ธ BUILT FOR MODERN SERVERS

โค๏ธ Preserving the Past. Protecting the Future.

Slimefun Legacy isn't just about adding features. It's about maintaining a reliable experience for players and server owners.

๐Ÿ”ง Modern Minecraft Compatibility

Carefully maintained for modern Paper servers with updated platform APIs and compatibility testing.

๐Ÿ’พ Existing World Preservation

Designed to retain established Slimefun items, machines, saved data, and addon compatibility wherever practical.

๐Ÿฉบ Slimefun Doctor

Built-in administrative tools help identify legacy items, diagnose addon compatibility issues, inspect stored data, and plan safe recovery operations.

โšก Performance & Stability

Improved machine lifecycle protection, ticker safeguards, Cargo optimizations, and runtime diagnostics help administrators investigate and reduce server performance problems.

๐Ÿ“– English-First Experience

English menus, names, lore, and messages without requiring a separate translation plugin.

๐Ÿ”„ Continued Development

Ongoing bug fixes, compatibility improvements, addon maintenance, and testing keep classic Slimefun alive on newer Minecraft versions.


๐Ÿฉบ MEET SLIMEFUN DOCTOR!

๐Ÿ” Diagnose. Repair. Recover.

Running an established Slimefun server?

Slimefun Legacy includes a dedicated administrative diagnostic and recovery system!

Useful commands include:

  • /sf doctor status โ€” Review Slimefun health and persistence status
  • /sf doctor scan โ€” Scan for recoverable item issues
  • /sf doctor compatibility โ€” Investigate addon compatibility
  • /sf doctor dependencies โ€” Identify missing dependencies
  • /sf doctor runtime โ€” Inspect runtime safeguards
  • /sf versions โ€” View installed addons and compatibility information

Recovery tools favor dry runs, backups, and explicit confirmation instead of dangerous automatic data rewrites.

Because protecting your players' hard-earned items matters! ๐Ÿ’Ž


๐Ÿ–ฅ๏ธ SERVER COMPATIBILITY

Platform Support
๐ŸŸข Paper 26.3 Primary development and validation target
๐ŸŸข Paper/Purpur 26.2 Supported compatibility line
๐ŸŸข Paper/Purpur 1.21.11 Supported compatibility line
๐ŸŸฃ Purpur 26.3 Experimental validation
๐Ÿงช Folia Experimental, with limitations
โŒ Spigot / CraftBukkit Unsupported
โŒ Forge / Fabric / NeoForge Not applicable โ€” server plugin

โ˜• Java: Java 25 is used for modern 26.2/26.3 servers. Minecraft 1.21.11 retains a Java 21 minimum.

๐ŸŽฎ Players: A normal Minecraft Java client is all that's needed. No client-side mods!

Always check the latest release notes for exact version and platform compatibility.


๐ŸŽจ OPTIONAL RESOURCE PACK SUPPORT

Want custom textures for your Slimefun experience?

Slimefun Legacy supports an optional resource-pack workflow with modern item-model compatibility.

  • ๐ŸŽจ Custom item visuals
  • โš™๏ธ Configurable resource-pack delivery
  • ๐Ÿ“ฆ Support for externally managed or combined packs
  • ๐Ÿงฉ Designed to coexist with setups using ItemsAdder or other resource-pack managers
  • ๐Ÿ”’ Disabled by default, giving server owners control

The resource pack is optional. Slimefun Legacy works without forcing players to install it!


๐Ÿš€ INSTALLATION โ€” LET'S GET SLIMY!

  1. ๐Ÿ’พ Back up your server and existing Slimefun data.
  2. ๐Ÿ“ฅ Download the latest compatible Slimefun Legacy release.
  3. ๐Ÿ“‚ Place the plugin JAR into your server's plugins folder.
  4. ๐Ÿ›‘ Remove the previous Slimefun core JAR to avoid duplicate installations.
  5. ๐Ÿ”„ Start your server normally.
  6. ๐Ÿ“– Open your Slimefun Guide and begin exploring!

For existing installations, review the startup log and run /sf doctor status and /sf doctor compatibility before reopening your server to players.

โš ๏ธ Never use /reload to install or update Slimefun. Always perform a complete server restart.


๐Ÿ’š WHY SLIMEFUN LEGACY?

Because classic Slimefun deserves to live on!

Minecraft continues to evolve, and servers shouldn't have to abandon years of Slimefun creations, research, machines, and memories simply because the game has changed.

Our goals are simple:

๐Ÿ›ก๏ธ Preserve the classic Slimefun experience.

โš™๏ธ Modernize compatibility with newer Minecraft server platforms.

๐Ÿš€ Improve performance, diagnostics, and maintainability.

๐Ÿ”Œ Support the amazing addon ecosystem.

๐Ÿ’š Keep Slimefun alive for the community!


๐Ÿ  Source Code & Development

https://github.com/wickidcow/Slimefun-Legacy

๐Ÿ“ฆ GitHub Releases & Addon Bundles

https://github.com/wickidcow/Slimefun-Legacy/releases

๐Ÿ“š Wiki & Documentation

https://github.com/wickidcow/Slimefun-Legacy/wiki

๐Ÿ”Œ Legacy Addon Collection

https://github.com/wickidcow/Slimefun-Legacy/wiki/Addons

๐Ÿ› Bug Reports & Feature Requests

https://github.com/wickidcow/Slimefun-Legacy/issues

๐ŸŽฎ See Slimefun Legacy in Action

AlbionMC.com โ€” The Minecraft server that helped inspire and drive this maintained project.


๐Ÿงช THE LEGACY CONTINUES!

From the smallest electric machine to the largest automated industrial empire, Slimefun Legacy brings technology, magic, creativity, and adventure together in one incredible Minecraft experience.

โšก Power your machines.

๐Ÿญ Build your factories.

๐Ÿ”ฎ Discover the magic.

๐ŸŒŽ Transform your world.

๐Ÿ’š SLIMEFUN LEGACY โ€” KEEP THE MAGIC ALIVE! ๐Ÿ’š

Slimefun Legacy is an independent, community-maintained continuation of Slimefun 4. It is not an official release of the original Slimefun project, Slimefun United, or the SlimefunGuguProject. Not affiliated with Mojang or Microsoft.

Sponsors

Support Slimefun Legacy

Slimefun Legacy is maintained as a community project to preserve, modernize, and improve the classic Slimefun experience for current Minecraft servers.

If you enjoy the project and want to support continued development, testing, compatibility work, and addon maintenance, sponsorships are always appreciated.

Every bit of support helps keep Slimefun Legacy moving forward. ๐Ÿ’š

Information

Category
Gameplay
Published
August 23, 2026
License
118Downloads
2Stars
Supports Folia

Pinned Versions

  • R
    Paper1.21.11โ€“26.3

Members

1