ModsJava
behind.jar
Java mod listed for Minecraft 1.21. Downloads from the MC Java Mods app on Android.
⬇ Download on Modrinth
Adds a portal that brings you to... old minecraft?. Make a portal out of andesite keep that in mind and go to the old minecraft! Find out the dark lore hiding inside your minecraft world... beware of the dangers ahead watch out for the ancient horrors awaiting you... VERY IN BETA!!!!!!!!!!! Please note, this is a one person mod, and im using mcreator, so im very limited. Everything in this mod is subject to change!
Quick facts
- Edition: Minecraft Java
- File type: .jar
- Minecraft version listed: 1.21.8
- 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 Modrinth — 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.
File checked by MCModsHub
- Ships as behindjar-1.0.0-neoforge-1.21.8.jar — drop this file into the mods folder
- Download size: 227 KB
- Download link checked 4 Oct 2026 — working
These come from our own check of the pack file, not from the source page.