Radioactive

A mod that adds various radioactive materials.

31 Downloads

neoforgeadventuregame-mechanicstechnology

Rent Server with this Mod

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About this Mod

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Radioactive is a mod that adds radioactive stuff to the game, such as:

Radioactive biome, with custom trees and atmosphere
Radioactivity system, with effects and hazmat armour set
Nuclear reactors (WIP)
Radioactive stone, Uranium and more!

⚠️ Keep in mind that this mod is still in development and some features are not final. Expect bugs or glitches. If you find one, please report it on the Discord server.

Available Versions

Radioactive 1.0alpha

MC 1.21.8neoforge

February 25, 2026

How to Install Radioactive on Your Server

Order Server

Order a Minecraft Java server with at least 3 GB RAM (4 GB recommended).

Set neoforge Loader

In the panel under "Egg", select the neoforge loader and matching Minecraft version (1.21.8).

Install Mod

Open the mod browser in the dashboard and search for "Radioactive". Click "Install" – done! Alternatively, upload the .jar via SFTP to the /mods folder.

Compatibility

Mod Loaders

neoforge

Minecraft Versions

1.21.8

Server-side

✓ Required

Recommended RAM

4 GB(min. 3 GB)

Frequently Asked Questions

Radioactive server crashes on startup – what to do?

Most common cause: wrong neoforge version or insufficient RAM. Check the server log (latest.log) for "OutOfMemoryError" or "Mixin" errors. With Mado Hosting: ensure at least 3 GB RAM is allocated and the loader matches the mod version (1.21.8). You can switch loaders with one click in the panel.

Is Radioactive compatible with neoforge?

Radioactive officially supports neoforge for Minecraft 1.21.8. The Mado dashboard automatically detects incompatible loader combinations.

Server lagging with Radioactive – how to optimize performance?

Recommended RAM: 4 GB (per 8 players). Use /spark profiler to check if Radioactive consumes the most tick time. Common fixes: reduce server view-distance to 8-10, install "performant" or "starlight" as supplementary mods on Forge. With Mado Hosting, your server runs on NVMe SSDs with dedicated CPU cores for minimal latency.