SlimefunCore is an unofficial modified build of Slimefun 4 for Java Edition servers running Paper or Purpur 1.21.11. It modernizes the original core with Java 21 support, compatibility fixes, improved startup behavior, and more reliable loading for updated SF4 addons.
By bringing Slimefun’s technology, magic, machines, automation, energy systems, and hundreds of custom items to a Minecraft server, it creates a modpack style experience without requiring client side mods. The project remains community maintained and may still be under testing, so BoxToPlay presents it as a practical option for servers seeking an expanded Slimefun ecosystem on modern software.
Select the version of SlimefunCore you want installed on your Minecraft server.
You go directly to your cart with the Minecraft plan and selected version of SlimefunCore already included. Check that everything is correct before continuing.
Wait while your Minecraft server is built and delivered. Installation of your selected SlimefunCore version starts during setup. Once it is ready, connect and have fun.
Create your Minecraft server and install the SlimefunCore plugin with one click!