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RheniumMinecraft mod for 26.3

Optimization for minecraft that culls block entities, entities, particles and items.

client and servernewest supported 26.3Optimization
Latest version
1.2.0
Loader
Fabric
Licence
LicenseRef-All-Rights-Reserved
Downloads
3.1k
Updated
4 d ago
Available on
Modrinth
Space NodeOur hosting

Host Rhenium servers

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

  • 26.3
  • Fabric
  • One click mod install
  • Loader matched for you
  • Ryzen CPUs
  • NVMe SSD
Deploy a serverFrom €0.90 per GB

Minecraft versions

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

Other mods
MinecraftThroughJavaEvidenceReleased
26.3Fabric25+declared15 Sept 2026
26.2Fabric25+declared16 Jun 2026
26.1.2Fabric25+declared9 Apr 2026
26.1.1Fabric25+declared1 Apr 2026
26.1Fabric25+declared24 Mar 2026
1.21.11Fabric21+declared9 Dec 2025
1.21.10Fabric21+declared7 Oct 2025
1.21.9Fabric21+declared30 Sept 2025
1.21.8Fabric21+declared17 Jul 2025
1.21.7Fabric21+declared30 Jun 2025
1.21.6Fabric21+declared17 Jun 2025
1.21.5Fabric21+declared25 Mar 2025
1.21.4Fabric21+declared3 Dec 2024
1.21.3Fabric21+declared23 Oct 2024
1.21.2Fabric21+declared22 Oct 2024
1.21.1Fabric21+declared8 Aug 2024

Download

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

1.2.0release24 May 2026

rhenium-1.2.0+mc1.21.11.jar · 48 KB · for 1.21.11, 1.21.10, 1.21.9, 1.21.8, 1.21.7 +6 more

Download latest
97edf7ba7a9d…
Older versions2
  • 1.1.020 May 20261.21.11, 1.21.10, 1.21.9, 1.21.8, 1.21.7 +6 more45 KB136 downloadsfe4fcbbb6795…Get
  • 1.0.017 May 20261.21.11, 1.21.10, 1.21.9, 1.21.8, 1.21.7 +6 more10 KB73 downloadsb84137076bff…Get

Frequently asked

Does Rhenium work on Minecraft 26.3?

Yes. 26.3 is the newest Minecraft version Rhenium 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 Rhenium support?

Everything the author has declared, from 1.21.1 up to 26.3. The full list is in the table above, with the Java runtime each version needs next to it.

Do I need to install Rhenium 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 Rhenium support?

Fabric. 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 Rhenium?

On the newest Minecraft version it supports, Java 25 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 Rhenium 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 Rhenium?

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 Rhenium 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.

Details from Modrinth, where the author last updated it on 6 Oct 2026. 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? .