ModsJava
Larp24's Upside Down
The author built this one for Minecraft 1.20.1 on Forge. On other versions it may install and then do nothing.
November 6th, 1983.
Overworld, once an peaceful place where animals lived at their kingdom, where mobs danced at midnight, had gotten upside down.
1:1 REPLICA of the overworld! (except structures and biomes)
Get a death from a Demogorgon to enter the upside down!
No mobs in the upsidedown!
Be careful from lightnings in the upside down!
Quick facts
- 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.
Verified by MCModsHub
- Ships as theupsidedown-6.11.83-v.1.3.1-forge-1.20.1.jar — drop this file into the mods folder
- Download size: 4.1 MB
- Download link checked 12 Sept 2026 — working
These come from our own check of the pack file, not from the source page.