CurseForge · Minecraft mod
Hazardous
Hazardous is a very configurable mod that adds hazards (like radiation, poison, ...) to your world. It's meant for modpack makers who want to spice up the world under certain conditions
Quick answer
Which Hazardous release should I use?
Hazardous - 1.20-1.0.0 targets 1.20.1 with Forge. The project page does not say whether this file belongs on the client, dedicated server, or both. All 1 required mods have matching files.
Where it goes
Is Hazardous required on the client, server, or both?
The project page does not say whether this file belongs on the client, dedicated server, or both.
The source does not explicitly classify this release as client-only or server-only.
What else does Hazardous - 1.20-1.0.0 need?
Hazardous - 1.20-1.0.0. Change the file and its required mods may change too.
Install McJtyLib first. We found matching files for this game-version and loader setup. 4 come through another mod in the chain.
4 extra mods were pulled in by other dependencies. Indented rows show who needs each one. We only count dependency files that match this setup. A file for another loader does not fill the gap.
Before you install it
Add Hazardous without breaking your instance.
Built for Hazardous - 1.20-1.0.0. Pick another file and the loader, install side or required mods may change.
- 01
Stick to this file
Use Hazardous - 1.20-1.0.0. It targets 1.20.1 with Forge; another release may have different loader, side or dependency requirements.
- 02
Bring the mods it needs
Install McJtyLib first. We found matching files for this game-version and loader setup. 4 come through another mod in the chain.
- 03
Put it on the correct side
The project page does not say whether this file belongs on the client, dedicated server, or both.
- 04
Pick the file you checked
Use the “Get this file” button beside Hazardous - 1.20-1.0.0. It opens that exact file at the source.
About this project
What does Hazardous add?
Hazardous is a mod that allows a modpack maker to add hazards (poison, radiation, ...) to your world based on various conditions. It adds various items to help and combat those hazards and is extremely configurable. Check out this link for more documentation:
https://github.com/McJtyMods/Hazardous/blob/main/docs/datapack.md
Thanks to TqLxQuanZ who asked for this mod for his DeceasedCraft modpack! He also contributed all of the assets (sounds and artwork)
Project description from CurseForge.
Pick your setup
Hazardous by Minecraft version and loader
Choose the version and loader you play, then open the matching release.
1.20.1
1 loader buildCheck the dependencies, then try the file in a copied instance before changing a world you care about.
Recent files
Hazardous versions and loaders
Hazardous - 1.20-1.0.0
hazardous-1.20-1.0.0.jar
31 Aug 2026
Hazardous - 1.20-0.0.4
hazardous-1.20-0.0.4.jar
13 Jul 2026
Hazardous - 1.20-0.0.3
hazardous-1.20-0.0.3.jar
16 May 2026
1.20-0.0.2
hazardous-1.20-0.0.2.jar
8 May 2026
Hazardous - 1.20-0.0.2
hazardous-1.20-0.0.2.jar
8 May 2026
hazardous-1.20-0.0.1.jar
14 Apr 2026
Looking for an older file? The official CurseForge project page is in Resources.