ModsJava
HardLib
Minecraft Java mod. Downloads from the MC Java Mods app on Android.
⬇ Download on CurseForge
This contains shared library code for the Hard Ores, Underground, and Wildlife mods. Various code hooks and intercommunication libraries are found here.
Part of the Reasonable Realism collection.
Occasionally HardLib gets ahead of Custom Ore Gen. If that is the case, a fork of COG can be found on my GitHub account and I will endeavor to keep an unofficial build of COG available during that time.
Quick facts
- Edition: Minecraft Java
- File type: .jar
- 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.
File checked by MCModsHub
- Ships as 1.12.1-HardLib-v3.jar — drop this file into the mods folder
- Download size: 110 KB
- Download link checked 22 Sept 2026 — working
These come from our own check of the pack file, not from the source page.