Project: Nuclei
by FiremelonX0
Project: Nuclei is a NeoForge industrial progression mod for 1.21.1 that adds a uranium chain, nuclear items and a radiochemical separator.
What it does
Uranium ore is mined, crushed in two steps, and then enriched until it becomes enriched uranium rods. Lead ore takes part in the same enrichment process. Graphite rods are made from coal, which yields carbon, together with coal and other crafting components, and they are needed for the nuclear bomb. The bomb itself is assembled from a concrete casing, graphite rods, gunpowder and enriched uranium rods, and the enriched rods also serve to make fission elements.
The mod is a scientific, industrial progression mod meant to be added to a modpack. A geiger counter is built from circuit components and an advanced processor, and that processor is used to craft the radiochemical separator. The separator splits radioactive elements, but it produces contaminated water and waste, and touching the contaminated water applies poison II.
Project: Nuclei runs on client and server, so the server and every player need it. Files are published for NeoForge 1.21.1 only, and the latest file is 0.3.0, an alpha build from 2026-06-17. The mod is released under All rights reserved and is not open source.
Key features
Uranium processing chain
Uranium ore passes through two crushing steps and an enrichment step before it becomes enriched uranium rods.
Nuclear bomb crafting
A nuke is assembled from a concrete casing, graphite rods, gunpowder and enriched uranium rods.
Radiochemical separator
The separator, crafted with an advanced processor, splits radioactive elements and yields waste.
Geiger counter
A geiger counter is built from circuit components and an advanced processor for detecting radiation.
Contamination hazard
Contaminated water from the separator gives poison II on contact, so the separator has a real cost.
Gallery
Compatibility
Latest build for each game version and loader.
Only full game releases are shown. This mod publishes no snapshot builds.
Use cases
Who it’s for: Players who want a scientific progression layer with a uranium chain and nuclear items, and modpack makers building an industrial pack on NeoForge 1.21.1.
How it compares
Ore Uranium is server-side only and built for 1.21.8, so players join without installing it. Radioactive runs on client and server for 1.21.8 as well. Yet Another Uranium Mod covers 1.21.1 on client and server, the same version and environment as this mod, and all three are released under All rights reserved and are not open source.
| Mod | Loaders | Game versions | Environment | Updated |
|---|---|---|---|---|
| Project: Nuclei | NeoForge | 1.21.1 | Client and server | 2026-06-17 |
| Ore Uranium | NeoForge | 1.21.8 | Server-side only | 2026-05-11 |
| Radioactive | NeoForge | 1.21.8 | Client and server | 2026-02-25 |
| Yet Another Uranium Mod | NeoForge | 1.21.1 | Client and server | 2026-09-01 |
Questions
Does Project: Nuclei need to be installed on the server?
Which loader and version does Project: Nuclei support?
Under which license is Project: Nuclei released?
In the catalog
Project: Nuclei is one of 8,515 World generation mods on ModsFinder, and one of 4,175 World generation mods for NeoForge. 32,366 mods support Minecraft 1.21.1.
Similar mods
What the author says
Adds nuclear aspects all for a nuke. Uranium rods are made from crushed uranium (obtainable from uranium ore) and then goes trough 2 steps to become an enriched uranium rod. Graphite rods are also needed for the nuclear bomb. They are otained from coal (carbon). The nuke is crafted from a casing, made from concrete…
Official listing
- Modrinth page
- modrinth.com/mod/project-nuclei
- Owner
- FiremelonX0
- Published
- 2026-06-15
- Updated on Modrinth
- 2026-06-17
- Facts verified
- 2026-10-15