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Uranium Age

by mubduster

Uranium Age, a Fabric technology mod, adds uranium reactors, portable reactors and lead blocks that shield against radiation.

FabricClient and serverCC0 1.0 Universal26.1.2

What it does

Uranium Age adds reactor blocks that run on uranium fuel and heat a furnace, blast furnace or smoker placed beneath them. Reactor Block needs a pre-made core and requires Reactor Controls, and its recipe calls for boron rods or a boron ingot together with a uranium ingot or uranium block. A reactor keeps running until its uranium fuel is used up, and the boron ingot is removed to shut it off. Portable reactors come in a portable uranium reactor and a portable uranium block reactor form, both of which can be placed.

Uranium is radioactive and hurts players and living entities such as sheep. Lead blocks placed around a uranium block stop the radiation from going in that direction, in the same way a sculk sensor is shielded. Players should know how close they get to uranium ore, since mining and moving through caves can expose them to radiation. The mod also lets uranium be used to craft traps. An ingot lasts a long time as fuel, while a block burns faster and costs more to use.

Uranium Age runs on client and server, so the server and every player need it. Files are published for Fabric only, for 26.1.2 and as the latest version, 1.0.1 for 26.1.2. The mod is released under the CC0 1.0 Universal license and is not open source.

Key features

  1. Uranium reactors

    Reactor blocks take uranium fuel and heat the furnace, blast furnace or smoker set under them until the fuel runs out.

  2. Portable reactors

    Portable uranium reactor and portable uranium block reactor versions can be placed wherever they are needed.

  3. Radiation and lead shielding

    Uranium radiation hurts players and living entities, and lead blocks placed beside a uranium block block radiation from that side.

  4. Uranium traps

    Uranium can be used to craft traps, and an ingot fuel lasts longer than a block fuel.

Compatibility

Latest build for each game version and loader.

26.1.21.0.1
ReleaseBetaAlphaNot available

Only full game releases are shown. This mod publishes no snapshot builds.

How it compares

Full comparison

BasicNuclearCraft is a Fabric mod for 1.21.1 under All rights reserved and not open source, which places it on an older version than Uranium Age. Natural Uranium is open source under the MIT License and targets 1.21.10 on Fabric. RadioIsotopes is open source under the MIT License for 1.18.2 – 1.19.2 on Fabric.

ModLoadersGame versionsEnvironmentUpdated
Uranium AgeFabric26.1.2Client and server2026-06-28
BasicNuclearCraftFabric1.21.1Client and server2026-09-05
Natural UraniumFabric1.21.10Client and server2025-11-14
RadioIsotopesFabric1.18.2 – 1.19.2Client and server2025-04-07

Questions

Does Reactor Block need another mod?

Yes. Reactor Block requires Reactor Controls, and the reactor needs a pre-made core before it can be built.

Does Uranium Age have to be installed on the server?

Yes. The server and every player need the mod installed.

Which game version does Uranium Age support?

Files are published for 26.1.2 only, with 1.0.1 for 26.1.2 as the latest version.

Can a reactor run without boron?

The reactor recipe calls for boron rods or a boron ingot, and the boron ingot is removed to shut the reactor off.

In the catalog

Uranium Age is one of 8,499 Technology mods on ModsFinder, and one of 4,201 Technology mods for Fabric. 15,189 mods support Minecraft 26.1.2.

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What the author says

This is the second mod I have published. This radiation can be blocked by placing Lead Blocks around it, just like you can do with the sculk sensor. Place a lead block on one of the faces of the Uranium block in question, and it will block all radiation from going in that direction.
mubduster, on the Modrinth page

Official listing

Owner
mubduster
Published
2026-06-21
Updated on Modrinth
2026-06-28
Facts verified
2026-10-15

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