Get Radium Client

Download & Install

Fabric 1.21.1 · 96 modules · Free 1-week trial · No launcher required

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Radium Client

The #1 DonutSMP utility mod — 96 modules, free 1-week trial, instant setup.

Version
1.21.1
Loader
Fabric
Modules
96
Trial
1 Week Free
Platform
Windows · macOS · Linux
⬇ Download Radium Client v1.21.1

Place the JAR in .minecraft/mods and launch with Fabric 1.21.1 · Free 1-week trial then paid plans available

System Requirements

Radium Client runs on any system that can run Minecraft Java Edition with Fabric.

Minecraft Version
Java Edition 1.21.1
Mod Loader
Fabric Loader
Java Version
Java 21 or newer
Operating System
Windows, macOS, Linux
RAM (Recommended)
4 GB or more allocated
File Format
.jar (Fabric mod)

Installation Guide

Follow these four steps to get Radium Client running in under two minutes.

1

Install the Fabric Loader

Download the Fabric installer and run it. In the installer, select Minecraft 1.21.1 from the version dropdown, then click Install. This creates a Fabric launch profile in your Minecraft launcher.

Fabric 1.21.1
2

Download Radium Client

Click the Download button above to save the Radium Client JAR file to your computer. The file name will be RadiumClient-1.4.2.jar.

RadiumClient-1.4.2.jar
3

Place JAR in the Mods Folder

Open your .minecraft folder (press Win+R, type %appdata%\.minecraft), open the mods subfolder, and drop the JAR file inside. Create the folder if it does not exist.

.minecraft/mods/
4

Launch with Fabric & Open the GUI

Open the Minecraft Launcher, select the Fabric 1.21.1 profile, and click Play. Once in-game, press Escape then Right Shift to open the Radium Client module panel and start configuring your modules.

Esc → Right Shift

Looking for older versions?

Previous Radium Client releases are available in the version archive.

View Release Archive →