Alexs Caves: Fallout Edition
Java mod listed for Minecraft 1.20. File opened and checked on 24 Sep 2026; downloads from the MC Java Mods app on Android.
⬇ Download on CurseForgeThe author built this one for Minecraft 1.20.1 on Forge. On other versions it may install and then do nothing.





THIS MOD REQUIRES STRUCTURES TO BE ENABLED TO WORK PROPERLY
DO NOT REMOVE THE MOD AND PLAY WORLDS THAT USE THIS MOD, IT WILL RESULT IN CORRUPTION
This mod, as mentioned in the mod's summary, is an addon of Alex's Caves that turn a chunk of the overworld into an apocalyptic wasteland, utilizing the toxic caves, and several other alex's caves biome parts to create it.
This wasteland is a harsh climate, and survival is quite tough, but, if you are skilled enough, you can survive this wasteland.
What the mod adds:
The Toxic Wasteland biome, this takes up over 60% of the overworld, a highly irradiated biome that has fallen into a state of nuclear hell ever since the day of nuclear annihilation previously, reducing most of the world to this biome.
Some basics:
The water in the toxic wasteland is radioactive, entering it irradiates you
Some parts of the ground are made of irradiated dirt, these irradiate you if you walk upon them.
Even being outdoors for prolonged periods can result in adverse side effects.
The wildlife is very hostile compared to the regular overworld, and night-times near death sentences if you are out in the open.
Credit to Alex, creator of Alex's Caves for making this addon at all possible!
This mod has no dependancies other than Alex's Caves and Citadel
Credits to DevSnaxo for the mod thumbnail and irradiated dirt textures!
- Edition: Minecraft Java
- File type: .jar
- Minecraft version listed: 1.20.1
- How to install: Install the matching mod loader (Forge, Fabric or NeoForge) for your Minecraft version. → Download the .jar. → Put it in the .minecraft/mods folder and launch that loader profile.
- Where to get it: Opens on CurseForge — not every file is mirrored on our own servers.
Install steps are the general flow for this file type — How to install Minecraft Java mods & modpacks walks through it step by step.
- Ships as alexscavesfallout-trenchesandstations.jar — drop this file into the mods folder
- Download size: 5.9 MB
- Download link checked 28 Sept 2026 — working
These come from our own check of the pack file, not from the source page.