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Thermonuclear Expansion
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Thermonuclear Expansion

Bedrock add-on listed for Minecraft 1.21–26.x (behavior + resource pack). File opened and checked on 19 Sep 2026; installs from the MC Bedrock Mods app on Android.

by BigManIsak · on CurseForge

Which Minecraft do you have?

Every version of the game needs its own build. Pick yours, then download — the wrong build installs fine and then does nothing in the game.

⬇ Download for 26.0.02⬇ Download for 1.21.122
I don't know my version
Open Minecraft and look at the bottom-left corner of the main screen — the version is printed there, like v1.26.30.
The game writes a 1. in front; the buttons above leave it off. v1.26.30 in the game is 26.30 here.
Open in MCModsHubGet it on Google Play →

On iPhone or iPad: find it in Addonaut.

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In order to remain unique, Thermonuclear Expansion, requires that you undergo a process very similar to what is used in real life to craft Nuclear weapons. This includes extracting both fissile, and inert uranium, refining it, and then building a nuclear reactor to bombard the uranium with neutrons to transmute it into plutonium, which can then be used to craft nuclear weapons.

This addon does NOT require any experiments to be turned on in order to function. It is, however, still missing a lot of features that I hope to add sometime in the future.

 

Guide

Craft Refiner.

Thermonuclear Expansion — Minecraft Bedrock addon, screenshot 1

 

Smelt redstone blocks to create Uranium Dust (Uranium-238).

Thermonuclear Expansion — Minecraft Bedrock addon, screenshot 2

 

Smelt redstone dust to create Fissile Uranium (Uranium-235)

Thermonuclear Expansion — Minecraft Bedrock addon, screenshot 3

 

Using a crafting table, craft 9 Fissile Uranium into a Uranium Fuel Rod block.

Thermonuclear Expansion — Minecraft Bedrock addon, screenshot 4

 

Craft the uranium dust in a Refiner to create a Uranium Block.

Thermonuclear Expansion — Minecraft Bedrock addon, screenshot 5

 

Place the Uranium Fuel Rods down and waterlog them. If they are not waterlogged, they

will meltdown, and explode. Once that is done, place a Uranium Block on top of the fuel

rods, and it will begin to transmute into Neptunium.

Thermonuclear Expansion — Minecraft Bedrock addon, screenshot 6

 

Once the Uranium has transmuted in Neptunium, it will need to be removed from the

reactor, and placed elsewhere. Do this carefully, as both the reactor and Neptunium are

extremely radioactive. After a period of time has elapsed, the Neptunium (left) will

transmute into Plutonium (right).

Thermonuclear Expansion — Minecraft Bedrock addon, screenshot 7

 

Using 4 iron blocks, 4 tnt, and one Plutonium block, you can craft a basic atomic bomb. This device is activated via a timer, and will explode after 10 seconds.

Thermonuclear Expansion — Minecraft Bedrock addon, screenshot 8

 

Hydrolysis is the process of separating the hydrogen and oxygen from water using electricity.

Using 8 glass blocks, you can craft a casing for the deuterium (hydrogen).

Thermonuclear Expansion — Minecraft Bedrock addon, screenshot 9

 

Placing the casing in water over a redstone block will begin the process of hydrolysis. This will only take a couple of seconds.

Thermonuclear Expansion — Minecraft Bedrock addon, screenshot 10

 

Coal blocks can be smelted in a furnace to turn them into graphite.

Thermonuclear Expansion — Minecraft Bedrock addon, screenshot 11

 

Using a Refiner, you can craft 2 graphite, and 2 Deuterium to create 16 blocks of Polystyrene Foam,

also known as Styrofoam.

Thermonuclear Expansion — Minecraft Bedrock addon, screenshot 12

 

The Polysterene Foam can be smelted in a furnace to create a melted polymer. (Don't do this IRL, it's

really bad for you and smells terrible).

Thermonuclear Expansion — Minecraft Bedrock addon, screenshot 13

 

Smelting charcoal in a furnace produces activated carbon.

Thermonuclear Expansion — Minecraft Bedrock addon, screenshot 14

 

Using Melted Polymers, and Activated Carbon, you can craft a hazmat suit. The suit will not work unless every part is worn, and even then it will only provide protection against the some of the radiation damage from radioactive materials. Below are the crafting recipies.

 

Mask:

Thermonuclear Expansion — Minecraft Bedrock addon, screenshot 15

 

Top:

Thermonuclear Expansion — Minecraft Bedrock addon, screenshot 16

 

Bottom:

Thermonuclear Expansion — Minecraft Bedrock addon, screenshot 17

 

Boots:

Thermonuclear Expansion — Minecraft Bedrock addon, screenshot 18

 

Full armor set:

Thermonuclear Expansion — Minecraft Bedrock addon, screenshot 19

 

Thermonuclear Missile. This missile can be launched in the overworld, and can reach anywhere that is loaded. If you target coordinates that are unloaded, then nothing will happen.

 

Using 3 iron blocks, 4 Polystyrene Foam, 1 Plutonium Block, and 1 Fissile Uranium, you can craft a warhead for a Thermonuclear Missile.

Thermonuclear Expansion — Minecraft Bedrock addon, screenshot 20

 

To create the fuselage, craft 6 iron blocks, 2 gunpowder, and 1 netherite scrap.

Thermonuclear Expansion — Minecraft Bedrock addon, screenshot 21

 

Once the Warhead and Fuselage are crafted, you can combine them together to make a Thermonuclear Missile.

Thermonuclear Expansion — Minecraft Bedrock addon, screenshot 22

 

Thermonuclear Missile.

Thermonuclear Expansion — Minecraft Bedrock addon, screenshot 23

 

 

Quick facts

Install steps are the general flow for this file type — How to install Minecraft Bedrock addons & mods walks through it step by step.

File checked by MCModsHub

These come from our own check of the pack file, not from the source page.

🧩 In these setups curated mod combos that play well together

📺 Bedrock videos for Thermonuclear Expansion watch on YouTube ↗

El Mejor ADDON de Bombas Nucleares Para MINECRAFT BEDROCK | Thermonuclear Expansion AddonYouTubeEl Mejor ADDON de Bombas Nucleares Para MINECRAFT BEDROCK | Thermonuclear Expansion AddonBawss
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