Radiation Zones
by FuzjaJadrowa
Radiation Zones lets server owners mark configurable areas per dimension where players take harmful effects unless they hold a Lugol's iodine protection.
What it does
Admins define radiation zones in a chosen dimension and set safe areas inside them with commands, which can also clear existing zones. Players standing outside a safe area receive harmful effects on a configurable check interval, and a boss bar warns them while they are inside a zone. Lugol's iodine is a custom effect and a potion that protects against the radiation, and its color, duration and recipe can all be changed in the configuration.
The mod is open source under the GNU General Public License v3.0 or later, and its source code and issue tracker are public. Files are published for Fabric and NeoForge on 1.21.1 only, with version 1.0.1 as the latest file for both loaders, released on 2026-04-22. Server platforms Paper, Spigot, Bukkit and Purpur are also supported, and the advanced configuration covers all of them.
Key features
Configurable radiation zones
Zone areas are set per dimension, so a nether or end zone can differ from the overworld.
Harmful effects outside safe areas
A list of radiation effects applies to players outside safe zones at a configurable interval.
Lugol's iodine protection
Lugol's iodine works as both a custom effect and a potion that blocks the radiation.
Boss bar warning
A boss bar appears while players are inside a radiation zone, and its settings can be adjusted.
Admin commands
Commands set and clear safe zones and can be disabled through the enableCommands option.
Broadcast and message options
Broadcast toggles and message templates let server owners control what players see.
Gallery
Compatibility
Latest build for each game version and loader.
Only full game releases are shown. This mod publishes no snapshot builds.
Use cases
Who it’s for: Server owners who want a hazard system with set areas, timed effects and a clear warning. Players on Fabric or NeoForge servers also use the custom effect and potion.
How it compares
CobbleZones is a Fabric and NeoForge mod for 1.21.1 that runs on client and server, and it is not open source under the MIT License. ProtectedArea is open source under the MIT License for Fabric on 1.21 – 1.21.11, and it is client-side only, so servers need nothing installed. ArcadiaGuard is open source under the MIT License for NeoForge on 1.21.1 and runs on client and server.
| Mod | Loaders | Game versions | Environment | Updated |
|---|---|---|---|---|
| Radiation Zones | Fabric and NeoForge | 1.21.1 | Not published | 2026-04-22 |
| CobbleZones | Fabric and NeoForge | 1.21.1 | Client and server | 2026-10-04 |
| ProtectedArea | Fabric | 1.21 – 1.21.11 | Client-side only | 2026-09-30 |
| ArcadiaGuard | NeoForge | 1.21.1 | Client and server | 2026-07-04 |
Questions
Does Radiation Zones need to be installed on the server?
Which loader should a server use?
Can radiation zones be configured per dimension?
In the catalog
Radiation Zones is one of 29,952 Game mechanics mods on ModsFinder, and one of 19,630 Game mechanics mods for Fabric. 32,366 mods support Minecraft 1.21.1.
More from FuzjaJadrowa
Similar mods
What the author says
Radiation Zones adds configurable radiation zones to Minecraft. Players outside safe areas receive harmful effects unless protected by Lugol's iodine. Customizable with admin commands and advanced config available on Paper, Fabric, and NeoForge. Note: commands can be disabled in configuration (enableCommands).
Official listing
- Modrinth page
- modrinth.com/mod/radiation-zones
- Owner
- FuzjaJadrowa
- Published
- 2026-04-18
- Updated on Modrinth
- 2026-04-22
- Facts verified
- 2026-10-15