- Latest version
- 4.0.0-beta.6
- Minecraft
- 1.20.1 to 1.21.1
- Java
- Java 21+
- Loaders
- Fabric, Forge, NeoForge
- Licence
- LicenseRef-All-Rights-Reserved
- Downloads
- 57.7k
- Updated
- 8 mo ago
- Available on
- Modrinth
PartnerHost Neptune servers
One click and Neptune is installed with the right loader, on hardware built for it.
- 1.21.1
- Fabric
- Forge
- NeoForge
- One click mod install
- Loader matched for you
- Ryzen CPUs
- NVMe SSD
Minecraft versions
Every version Neptune declares support for, newest first, with the Java runtime that version needs.
neptune-4.0.0-beta.6.jar · 0.4 MB · for 1.21.1
40b5269d9f03…Older versions24Hide older versions
- 4.0.0-beta.5-bugfix.316 Oct 20251.21.10.8 MB136 downloads
6a8d19b9185c…Get - 4.0.0-beta.5-bugfix.216 Oct 20251.21.10.8 MB27 downloads
0e6a06e4dfec…Get - 4.0.0-beta.5-bugfix15 Oct 20251.21.10.8 MB28 downloads
e2e728b1c747…Get - 4.0.0-beta.515 Oct 20251.21.10.8 MB35 downloads
ebd1cc8d3b35…Get - 4.0.0-beta.415 Oct 20251.21.10.8 MB26 downloads
2b9ef501cddb…Get - 4.0.0-beta.3-bugfix15 Oct 20251.21.10.8 MB26 downloads
e7c92d5e5ca3…Get - 4.0.0-beta.315 Oct 20251.21.10.8 MB31 downloads
a22875c16c33…Get - 4.0.0-beta.215 Oct 20251.21.10.8 MB29 downloads
3600956accef…Get - 4.0.0-beta.111 Oct 20251.21.10.8 MB42 downloads
7b29a3a4453b…Get - 3.4.1-bugfix22 Jul 20251.20.11.4 MB6.8k downloads
50416b474860…Get - 3.4.122 Jul 20251.20.11.4 MB114 downloads
f2a20f642863…Get - 3.4-bugfix21 Jul 20251.20.11.4 MB77 downloads
1980a89dcdc5…Get - 3.421 Jul 20251.20.11.4 MB47 downloads
4d01efbc1b8c…Get - 3.3.38 Jul 20251.20.11.4 MB1.1k downloads
d01d142ec33f…Get - 3.3.228 Jun 20251.20.11.4 MB168 downloads
a24f19fc5b63…Get - 3.3.128 Jun 20251.20.11.4 MB28 downloads
65946548ba29…Get - 3.327 May 20251.20.11.4 MB494 downloads
b784b9fc962d…Get - 3.2.18 Apr 20251.20.11.4 MB445 downloads
72c3c2ba84af…Get - 3.229 Mar 20251.20.11.4 MB156 downloads
8cab86929c04…Get - 3.127 Mar 20251.20.11.4 MB60 downloads
5789af9b0447…Get - 3.1-beta.127 Mar 20251.20.11.4 MB46 downloads
61f88b8246b2…Get - 3.0.118 Mar 20251.20.11.4 MB91 downloads
4d4c876ddd4a…Get - 3.018 Mar 20251.20.11.4 MB50 downloads
49d222b11c01…Get - 2.34 Mar 20251.20.11.4 MB82 downloads
0111316bb6f5…Get
Frequently asked
Does Neptune work on Minecraft 1.21.1?
Yes. 1.21.1 is the newest Minecraft version Neptune 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 Neptune support?
Everything the author has declared, from 1.20.1 up to 1.21.1. The full list is in the table above, with the Java runtime each version needs next to it.
Do I need to install Neptune on the client or the server?
Both. Every player needs it installed and so does the server, so anyone joining without it will be refused.
Which loader does Neptune need?
Fabric, Forge, NeoForge. A build for one loader will not load on another, so this is the first thing to check before the Minecraft version.
Which Java version do I need for Neptune?
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 mod itself.
What licence is Neptune under?
LicenseRef-All-Rights-Reserved, 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 Neptune?
Install the matching loader first, then put the downloaded file in your mods folder and start the game. The loader, the mod and Minecraft all have to be on the same version, which is the usual reason a mod does not appear in game.
Where do I download Neptune 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 recent Minecraft version coverage overlaps, not by popularity.
Is this information wrong or missing something? .