HBM's Nuclear Tech Mod: Final Edition

Radiation in this fork depends on real geometry. Raycast-based occlusion checks which shielding blocks lie between a source and the player, and shielding is scored with an HVL, a Half-Value Layer figure, so material thickness matters. Exposure accumulates over time through ARS dose timers, so consequences grow with exposure time instead of striking at a single instant death threshold. A cancer mechanic adds lasting risk from long-term low-dose exposure.

The fork extends the content with nuclear waste that can be turned into RTG pellets, a BAT 9000 that stores antimatter, and white, yellow and red steel scaffold variants. Some changes aim at more interesting realistic mechanics, while others exist for their humor, such as an RBMK that runs on literal antimatter. The author notes that development continues and that additions are documented as they arrive.

The mod is a standalone fork, separate from the HBM's Nuclear Tech Mod: Community Edition, and its files target Forge for 1.12.2 only, with the latest file X001 dated 2026-07-25 on the beta channel. Client and server both need it, and the code is open source under the GNU General Public License v3.0 or later.