Radiation Threat
by Kardan
Radiation Threat adds realistic radiation to Minecraft 1.20.1 on Forge, with exposure that players must manage while they explore and build.
What it does
Radiation exposure is tracked for each player, and the effect grows with time spent in contaminated areas. The mod is built to support backpack mods, including Sophisticated Backpacks and Traveler's Backpack, so carried gear can be handled alongside the radiation system. Create Nuclear is also named by the author as a companion mod the design takes into account.
Installation is on Forge for 1.20.1 only. Servers that run it need every player to install it too. The code is under the Creative Commons Attribution Non Commercial 4.0 license and is not open source. The latest Forge build is 0.9.3.1, released on 2026-09-04 on the beta channel.
Key features
Radiation exposure
Players accumulate radiation while they stay in contaminated areas and must act on the effect over time.
Backpack support
The radiation system works with Sophisticated Backpacks and Traveler's Backpack, which the author lists as officially supported.
Nuclear-themed content
The mod is meant to sit beside nuclear-themed mods such as Create Nuclear, adding hazards that fit that style of play.
Trailer and channel
The author has posted an original trailer and a channel that shows the mod in action.
Compatibility
Latest build for each game version and loader.
Only full game releases are shown. This mod publishes no snapshot builds.
Use cases
Survival play with hazards
Players who want a dangerous environment to manage can set up radiation zones and plan their routes around them.
Modpacks with backpacks
Pack builders who already use Sophisticated Backpacks or Traveler's Backpack can add radiation without changing those mods.
Who it’s for: Players who want radiation as a survival hazard on Forge 1.20.1, and modpack makers combining it with backpack mods or nuclear-themed content.
Questions
Does Radiation Threat need to be installed on the server?
Which Minecraft version does Radiation Threat support?
Does Radiation Threat work with backpack mods?
In the catalog
Radiation Threat is one of 7,555 Cursed mods on ModsFinder, and one of 3,426 Cursed mods for Forge. 34,764 mods support Minecraft 1.20.1.
Similar mods
What the author says
Watch the original trailer from the author's channel here: ## mod version 0.9.3
Official listing
- Modrinth page
- modrinth.com/mod/radiation-threat
- Owner
- Kardan
- Published
- 2026-07-24
- Updated on Modrinth
- 2026-09-04
- Facts verified
- 2026-10-15