HBM Nuclear Tech Neo

A community port of HBM's Nuclear Tech Mod to NeoForge 1.21.1.

HBM's Nuclear Tech Mod is one of the most ambitious tech mods ever made for Minecraft — nuclear fission and fusion, orbital weapons, radiation, oil processing, and a genuinely enormous industrial tech tree. This project brings that content back to modern Minecraft, rebuilt on NeoForge 1.21.1.

Features

Nuclear engineering

• Fission reactors, fusion chambers, tokamaks, and reactor cores
• Full fuel cycle: uranium and plutonium pellets, isotope separation, centrifuges, decay chambers, spent fuel pools, and waste storage
• Radiation system with fallout zones, geiger counters, protective gear, and anti-rad medication

Weapons and ordnance

• 85 firearms: pistols, rifles, SMGs, machine guns, shotguns, snipers, railguns, laser and plasma weapons
• Missiles, ICBMs, tactical nukes, and an orbital kinetic strike system
• Real detonation mechanics — mushroom clouds, blast craters, and lingering irradiated terrain

Industry

• 120 machines covering ore processing, chemistry, oil refining, precision manufacturing, and space technology
• Machines accept power, process inputs on a configurable recipe table, and can be started or stopped by redstone or by hand
• Energy cables, fluid pipes, and item logistics

Content scale

• 1311 items, 288 blocks, 809 recipes, 2173 textures, 150 sound effects
• Fully localised item and block names

Requirements

Mekanism is optional. When present, HBM machines and cables register as Mekanism-compatible, so Mekanism pipes, cables, and logistical transporters can interface with them directly.

Installation

1. Install NeoForge 21.1.193 or newer for Minecraft 1.21.1
2. Drop the .jar into your mods folder
3. Launch the game

For servers, install the same jar on the server and all clients.

Configuration

Machine conversion recipes are fully configurable without recompiling. On first launch, a default recipe table ships inside the jar. To override it, create:

config/hbm/machine_recipes.json

{
  "default": { "input": "minecraft:iron_ingot", "output": "hbm:steel_ingot", "energy": 10 },
  "machines": [
    {
      "keys": ["isotope_separator", "centrifugal_cascade"],
      "input": "hbm:uranium_pellet",
      "output": "hbm:isotope_u235",
      "energy": 15
    }
  ]
}

Each craft cycle consumes one input item, produces one output item, and draws the listed amount of energy. If the file is missing or malformed, the built-in table is used instead, so machines always have working recipes.

Credits and licence

• Original mod: HBM's Nuclear Tech Mod by HbMinecraft and contributors — all design, art direction, and content originate there. This port exists because of their work.
• This port: NeoForge 1.21.1 compatibility layer and rebuild.

Please respect the original project's licensing terms.

Known limitations

This is a work in progress port, and a few areas are still incomplete:

• Some entities are not yet visible on the client (they function correctly on the server, but lack dedicated renderers).
• A number of decorative and legacy blocks are not yet wired to their own block entities.
• Development focuses on NeoForge 1.21.1; no other versions are planned right now.

Bug reports and feedback are very welcome — please include your NeoForge version and a latest.log if you are reporting a crash.