plugin
Slimefun United
A modern and organised continuation of Slimefun’s legacy. Slimefun United transforms your server into a modpack-like experience with backpacks, jetpacks, reactors, electricity, automation and countless new systems.
- Latest version
- no release indexed
- Minecraft
- 1.19 to 1.21.11
- Java
- Java 21+
- Loaders
- Purpur, Paper
- Licence
- GPL-3.0-only
- Downloads
- 2.3k
- Updated
- 5 mo ago
- Available on
- Modrinth
Minecraft versions
Every version Slimefun United declares support for, newest first, with the Java runtime that version needs.
| Minecraft | Through | Java | Evidence | Released |
|---|---|---|---|---|
| 1.21.11 | Purpur, Paper | 21+ | declared | 9 Dec 2025 |
| 1.21.10 | Purpur, Paper | 21+ | declared | 7 Oct 2025 |
| 1.21.9 | Paper, Purpur | 21+ | declared | 30 Sept 2025 |
| 1.21.8 | Purpur, Paper | 21+ | declared | 17 Jul 2025 |
| 1.21.7 | Purpur, Paper | 21+ | declared | 30 Jun 2025 |
| 1.21.6 | Purpur, Paper | 21+ | declared | 17 Jun 2025 |
| 1.21.5 | Purpur, Paper | 21+ | declared | 25 Mar 2025 |
| 1.21.4 | Purpur, Paper | 21+ | declared | 3 Dec 2024 |
| 1.21.3 | Purpur, Paper | 21+ | declared | 23 Oct 2024 |
| 1.21.2 | Purpur, Paper | 21+ | declared | 22 Oct 2024 |
| 1.21.1 | Purpur, Paper | 21+ | declared | 8 Aug 2024 |
| 1.21 | Paper, Purpur | 21+ | declared | 13 Jun 2024 |
| 1.20.6 | Purpur, Paper | 21+ | declared | 29 Apr 2024 |
| 1.20.5 | Purpur, Paper | 21+ | declared | 23 Apr 2024 |
| 1.20.4 | Paper, Purpur | 17+ | declared | 7 Dec 2023 |
| 1.20.3 | Purpur, Paper | 17+ | declared | 4 Dec 2023 |
| 1.20.2 | Purpur, Paper | 17+ | declared | 20 Sept 2023 |
| 1.20.1 | Paper, Purpur | 17+ | declared | 12 Jun 2023 |
| 1.20 | Purpur, Paper | 17+ | declared | 2 Jun 2023 |
| 1.19.4 | Purpur, Paper | 17+ | declared | 14 Mar 2023 |
| 1.19.3 | Paper, Purpur | 17+ | declared | 7 Dec 2022 |
| 1.19.2 | Purpur, Paper | 17+ | declared | 5 Aug 2022 |
| 1.19.1 | Purpur, Paper | 17+ | declared | 27 Jul 2022 |
| 1.19 | Purpur, Paper | 17+ | declared | 7 Jun 2022 |
Frequently asked
Does Slimefun United work on Minecraft 1.21.11?
Yes. 1.21.11 is the newest Minecraft version Slimefun United declares support for, and the claim comes from the author's own release metadata rather than from a compatibility list somebody maintains by hand.
Which Minecraft versions does Slimefun United support?
Everything the author has declared, from 1.19 up to 1.21.11. The full list is in the table above, with the Java runtime each version needs next to it.
Do I need to install Slimefun United on the client or the server?
The server only. Players join with an ordinary Minecraft client and install nothing.
Which server software does Slimefun United need?
Purpur, Paper. A build for one server platform will not load on another, so this is the first thing to check before the Minecraft version.
Which Java version do I need for Slimefun United?
Java 21 or newer, because that is what the newest Minecraft release it supports requires. The requirement comes from the game rather than from the plugin itself.
What licence is Slimefun United under?
GPL-3.0-only, as stated by the author on the platform we synced it from. Check the project's own page before redistributing or bundling it.
How do I install Slimefun United?
Download the file from the author's own release, drop it into your server's plugins folder, and restart the server. It generates its configuration on first start. Check the Minecraft version matches the one your server runs.
Where do I download Slimefun United safely?
From the author's own page on Modrinth, which is where the data here is synced from. MCReference never mirrors, re-hosts or repackages a file: every download button points at the original source, so you get exactly what the author published.
Works on the same versions
Ordered by how much of the Minecraft version coverage overlaps, not by popularity.