CurseForge · Minecraft mod
Radonium
An optimization mod. It also adds colored, dynamic, and varied lighting to Minecraft.
Quick answer
Which Radonium release matches Fabric?
Radonium-2.5-Beta targets 26.1.2 with Fabric. The project page does not say whether this file belongs on the client, dedicated server, or both. All 1 required mods have matching files.
Where it goes
Is Radonium required on the client, server, or both?
The project page does not say whether this file belongs on the client, dedicated server, or both.
The source does not explicitly classify this release as client-only or server-only.
What else does Radonium-2.5-Beta need?
Radonium-2.5-Beta on Fabric. Every mod below is checked against that same setup.
Install Fabric API first. We found matching files for this game-version and loader setup. 1 comes through another mod in the chain.
1 extra mod was pulled in by another dependency. Indented rows show who needs each one. We only count dependency files that match this setup. A file for another loader does not fill the gap.
Before you install it
Add Radonium without breaking your instance.
Built for Radonium-2.5-Beta on Fabric. Pick another file and the loader, install side or required mods may change.
- 01
Stick to this file
Use Radonium-2.5-Beta. It targets 26.1.2 with Fabric; another release may have different loader, side or dependency requirements.
- 02
Bring the mods it needs
Install Fabric API first. We found matching files for this game-version and loader setup. 1 comes through another mod in the chain.
- 03
Put it on the correct side
The project page does not say whether this file belongs on the client, dedicated server, or both.
- 04
Pick the file you checked
Use the “Get this file” button beside Radonium-2.5-Beta. It opens that exact file at the source.
About this project
What does Radonium add?
Overview
A mod that adds colored, dynamic lighting entirely on the client side. It also ensures the lighting is well-optimized and minimizes bugs.
One of Radonium's key features is optimization essentially, the mod combines high-quality lighting with optimized performance.
Configuration
You can easily configure the mod in-game using ModMenu and Cloth Config API. After installing both, simply find this mod in your mod list and click the configuration button. The mod offers a wide variety of optimization tweaks, including multithreaded particle rendering, occlusion culling behind blocks, lighting adjustments, and much more.
Future plans:
1. Add compatibility with the Vulkan mod. (Most likely it will be in the release).
Add compatibility with the latest versions of Polytone. (Will be added in version 2.5).
Light will no longer shine through blocks. (This will likely be included in the release or in the latest beta versions).
Porting to 1.21.11, 26.2, and 26.3. And a potential port to NeoForge 1.21.11+.
Modpack Exception (Permitted Use)
Permission: Notwithstanding the "NoDerivatives" (ND) restriction of the CC BY-NC-ND 4.0 license, you are granted automatic permission to include this mod in any modpack or mod collection. You may distribute, bundle, and repackage the mod's files as part of your modpack without requesting prior written consent from the author.
Conditions: This exception applies only if the modpack is distributed entirely free of charge and is not used for commercial purposes (in line with the "NonCommercial" restriction). Credit to the original author must be provided in the modpack's documentation or description, along with a link to the official project page.
Project description from CurseForge.
Pick your setup
Radonium by Minecraft version and loader
Choose the version and loader you play, then open the matching release.
26.1.2
1 loader buildCheck the dependencies, then try the file in a copied instance before changing a world you care about.
Recent files
Radonium versions and loaders
Radonium-2.5-Beta
radonium-2.5-1.jar
15 Nov 2026
Radonium-2.4.1-Beta
radonium-2.4.1.jar
7 Nov 2026
Radonium-2.4-Beta
radonium-2.4-4.jar
2 Nov 2026
Radonium-2.3-Beta
radonium-2.3.jar
27 Oct 2026
Radonium-2.2-Beta
radonium-2.2.jar
23 Oct 2026
Radonium-2.1-Beta
radonium-2.1.jar
20 Oct 2026
radonium-2.0-Beta
radonium-2.0.jar
17 Oct 2026
Looking for an older file? The official CurseForge project page is in Resources.