Iron Gen Nerf
A nerf to iron for prolonging the early game, made with copper tools mods in mind. Iron is less common and generates lower in the world.
⬇ Download on ModrinthChanges to iron ore blobs that are part of the trapezoid distribution:
- Size decreased from 9 to 8, meaning max ore blocks in a blob goes from 13 to 10
- Generation attempts decreased from 10 to 8
- Trapezoid distribution moved from Y=56 & Y=-24 to Y=32 & Y=-32
Changes to iron ore blobs that are of uniform distribution:
- Generation attempts decreased from 10 to 6
- Uniform distribution highest Y-level moved from Y=72 to Y=16
Changes to iron ore blobs that spawn in mountains:
- Ore blob size same as those of trapezoid distribution
- Generation attempts decreased from 90 to 60
This makes peak iron around Y=0, about where deepslate begins, and the amount of iron in mountains should be around half as much as before. The numbers I chose were an attempt to make iron have a similar rarity to redstone when underground, but at the elevation of lapis. Mountain iron had to be nerfed to keep it in balance with the undergroun iron.
Minecraft wiki links if you are confused as to what I'm talking about (especially with terminology):
- Edition: Minecraft Java
- File type: .jar
- Minecraft versions listed: 1.20, 1.20.1, 1.20.2
- 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 — see the MC Java Mods guides for the full walkthrough.
- Downloads as IronGenNerf.zip
- Download size: 11 KB
- Download link checked 21 Aug 2026 — working
These come from our own check of the pack file, not from the source page.