
Create Nuclear
A Create addon that adds nuclear reactors to Create, along with all the dangers associated with radiation!
Screenshots





About this Mod
⚠️ WARNING FOR V2 UPDATE ⚠️
If you are updating an existing world to V2, you MUST completely dismantle your active reactors before updating!
Leaving an old reactor assembled could result in corruption or an immediate nuclear meltdown.
About
Create nuclear is a mod that adds a whole nuclear system to the create mod. An optimized reactor can now produce over eight millions SU.
Create nuclear also adds Uranium and Thorium ores, and all the refining process to create and power the reactor automatically. You can even build setups from infinite sources like cobblestone with a complex refining process that exploits all the potential of create appliances.
New in V2:
- Reactor Tiers: Build Tier 1, Tier 2, and Tier 3 reactors for higher energy outputs and heat capacities.
- Coolant System: Use new fluids like Nitrogen to balance your reactor's heat and prevent meltdowns.
- Radiation: Radioactive items now emit ambient radiation. Protect yourself using the new Iodine system and Anti-Radiation armor.
- Meltdowns & Biomes: A reactor meltdown will now trigger a massive nuclear explosion, leaving behind a hostile Irradiated Land biome.

Wiki
Need help building your reactor or understanding the new mechanics? Check out our Official Wiki!
Usage
Fabric
You need to install first the Create Fabric & Fabric API mod.
We are now compatible with JEI, REI, EMI.
Forge & NeoForge
You need to install first the Create mod.
We are now compatible with JEI, REI, EMI.
Socials
Join our discord server for following updates & share your feedback by clicking here
Also we have a link tree for all our socials, click here
Localization
If you want to help us with translations, we have opened a Crowdin project. Click here.
Source Code
Forge
https://github.com/Create-Nuclear-Team/CreateNuclearForge
NeoForge
https://github.com/Create-Nuclear-Team/CreateNuclearNeoForge
Fabric
https://github.com/Create-Nuclear-Team/CreateNuclearFabric
Credits
The nuclear explosion effects and visuals in V2 are based on code originally created by the Alex's Caves team, which we then adapted and reworked to fit the specific needs of our mod. A huge thanks to them for their incredible work!
Available Versions
How to Install Create Nuclear on Your Server
Order Server
Order a Minecraft Java server with at least 4 GB RAM (6 GB recommended).
Set fabric Loader
In the panel under "Egg", select the fabric loader and matching Minecraft version (1.21.1).
Install Mod
Open the mod browser in the dashboard and search for "Create Nuclear". Click "Install" – done! Alternatively, upload the .jar via SFTP to the /mods folder.
Compatibility
Mod Loaders
Minecraft Versions
1.21.1, 1.21, 1.20.1
Server-side
✓ RequiredRecommended RAM
6 GB(min. 4 GB)Frequently Asked Questions
Create Nuclear server crashes on startup – what to do?
Most common cause: wrong fabric version or insufficient RAM. Check the server log (latest.log) for "OutOfMemoryError" or "Mixin" errors. With Mado Hosting: ensure at least 4 GB RAM is allocated and the loader matches the mod version (1.21.1). You can switch loaders with one click in the panel.
Is Create Nuclear compatible with fabric and forge and neoforge?
Create Nuclear officially supports fabric, forge, neoforge for Minecraft 1.21.1, 1.21, 1.20.1. Note: Forge and Fabric mods are NOT cross-compatible – pick one loader and stick with it. The Mado dashboard automatically detects incompatible loader combinations.
Server lagging with Create Nuclear – how to optimize performance?
Recommended RAM: 6 GB (per 5 players). Use /spark profiler to check if Create Nuclear 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.
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Rent Modded Server
Install Create Nuclear with just one click on your server.