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StellarisMinecraft mod for 1.21.5

Discover the next gen space mod!

client and servernewest supported 1.21.5TechnologyAdventureEquipmentGame Mechanics
Latest version
1.4.25
Minecraft
1.20.6 to 1.21.5
Java
Java 21+
Loaders
Fabric, NeoForge
Licence
CC-BY-NC-SA-4.0
Downloads
189.3k
Updated
1 d ago
Available on
Modrinth
Space NodeOur hosting

Host Stellaris servers

One click and Stellaris is installed with the right loader, on hardware built for it.

  • 1.21.5
  • Fabric
  • NeoForge
  • One click mod install
  • Loader matched for you
  • Ryzen CPUs
  • NVMe SSD
Deploy a serverFrom €0.90 per GB

Screenshots

Click a screenshot to open it. Screenshots are served from the author’s own host and belong to them.

Minecraft versions

Every version Stellaris declares support for, newest first, with the Java runtime that version needs.

Other mods
MinecraftThroughJavaEvidenceReleased
1.21.5Fabric, NeoForge21+declared25 Mar 2025
1.21.1Fabric, NeoForge21+declared8 Aug 2024
1.21Fabric, NeoForge21+declared13 Jun 2024
1.20.6Fabric, NeoForge21+declared29 Apr 2024

Download

From Stellaris’s own host. Nothing is re-hosted here.

All 29 releases
1.4.25release9 Jul 2026

stellaris-1.21-neoforge-1.4.25.jar · 8.9 MB · for 1.21, 1.21.1

Download latest
32045825077f…
Older versions24
  • 1.4.244 Jul 20261.21, 1.21.18.9 MB191 downloads191c4d7820a4…Get
  • 1.4.2327 May 20261.21, 1.21.18.9 MB1.6k downloads379ba0b2de7e…Get
  • 1.3.2126 Apr 20261.21.58.4 MB121 downloads6f0897b3be32…Get
  • 1.4.2219 Apr 20261.21, 1.21.18.9 MB1.4k downloads5281dfdd2ea4…Get
  • 1.4.216 Mar 20261.21, 1.21.19.6 MB2.1k downloadse2c8f0594b4d…Get
  • 1.4.2024 Jan 20261.21, 1.21.19.6 MB2.3k downloads055afa673c36…Get
  • 1.4.199 Dec 20251.21, 1.21.19.6 MB7.0k downloads51c2078883c4…Get
  • 1.4.186 Dec 20251.21, 1.21.116.3 MB420 downloads13107fcc11a7…Get
  • 1.4.176 Dec 20251.21, 1.21.116.3 MB67 downloadsed74fdde95c8…Get
  • 1.4.165 Dec 20251.21, 1.21.116.4 MB178 downloadsf0a14d495c8d…Get
  • 1.4.1513 Nov 20251.21, 1.21.18.8 MB2.6k downloads8421b640950e…Get
  • 1.4.146 Nov 20251.21, 1.21.18.8 MB425 downloads6b3a2be63217…Get
  • 1.4.1326 Oct 20251.21, 1.21.18.8 MB677 downloads433f0fb8cef8…Get
  • 1.4.1212 Oct 20251.21, 1.21.18.8 MB813 downloads908c11ec9141…Get
  • 1.4.1127 Sept 20251.21, 1.21.18.8 MB837 downloadsacdc07219b0a…Get
  • 1.4.1026 Sept 20251.21, 1.21.18.8 MB83 downloadse65c2ccd686e…Get
  • 1.4.91 Sept 20251.21, 1.21.18.8 MB905 downloadsfcd2256bd068…Get
  • 1.4.827 Aug 20251.21, 1.21.18.8 MB312 downloadsd6e1d05b0cc8…Get
  • 1.4.724 Aug 20251.21, 1.21.18.8 MB323 downloads104ac5c4f7c7…Get
  • 1.4.615 Aug 20251.21, 1.21.18.7 MB1.7k downloadsc26eb1c876ff…Get
  • 1.4.510 Aug 20251.21, 1.21.18.8 MB254 downloads584eca0c047b…Get
  • 1.3.202 Aug 20251.21.58.4 MB1.7k downloads1848fd2b00d3…Get
  • 1.4.426 Jul 20251.21, 1.21.18.8 MB584 downloads09a35af3389d…Get
  • 1.4.319 Jul 20251.21, 1.21.18.8 MB418 downloads5986247fa8b9…Get

Frequently asked

Does Stellaris work on Minecraft 1.21.5?

Yes. 1.21.5 is the newest Minecraft version Stellaris 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 Stellaris support?

Everything the author has declared, from 1.20.6 up to 1.21.5. The full list is in the table above, with the Java runtime each version needs next to it.

Do I need to install Stellaris 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 platform or loader does Stellaris support?

Fabric, NeoForge. A build for one platform or loader will not necessarily load on another, so this is the first thing to check before the Minecraft version.

Which Java version do I need for Stellaris?

On the newest Minecraft version it supports, Java 21 or newer. The requirement comes from the Minecraft version you run rather than from the mod itself, so on an older supported Minecraft the answer is that version's Java, not this one.

What licence is Stellaris under?

CC-BY-NC-SA-4.0, 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 Stellaris?

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 Stellaris safely?

Start with the author's page on Modrinth, which is where the data here is synced from. MCReference does not host or repackage files. The download link goes to the source recorded for that release; verify the publisher, filename and checksum before running it.

Works on the same versions

Ordered by how much of the recent Minecraft version coverage overlaps, not by popularity.

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Last checked 1 d ago against Modrinth. We do not host files and we do not republish descriptions; every download link points at the author’s own release.

Is this information wrong or missing something? .