
Modrinth · Minecraft mod
Reduced Ores
Reduced Ores is a lightweight and highly compatible mod that lowers ore generation to bring back balance, challenge, and meaning to mining.
Quick answer
Which Reduced Ores release should I use?
Reduced Ores 1.3 targets 1.20.1, 1.20.2, 1.20.3 with Forge. Installation on the client is optional. Installation on the dedicated server is optional. No extra mods listed for this file.
Where it goes
Is Reduced Ores required on the client, server, or both?
Installation on the client is optional. Installation on the dedicated server is optional.
The source marks this as usable on both the client and server.
What else does Reduced Ores 1.3 need?
1.3. Change the file and its required mods may change too.
This file does not list any required mods. Do not add a library just because a different file uses it.
This file does not list any required or optional mods.
Before you install it
Add Reduced Ores without breaking your instance.
Built for Reduced Ores 1.3. Pick another file and the loader, install side or required mods may change.
- 01
Stick to this file
Use 1.3. It targets 1.20.1, 1.20.2, 1.20.3 with Forge; another release may have different loader, side or dependency requirements.
- 02
Bring the mods it needs
This file does not list any required mods. Do not add a library just because a different file uses it.
- 03
Put it on the correct side
Installation on the client is optional. Installation on the dedicated server is optional.
- 04
Pick the file you checked
Use the “Get this file” button beside 1.3. It opens that exact file at the source.
About this project
What does Reduced Ores add?
⛏️ ReducedOres - Mod
Ever installed a few content mods and ended up with caves that contain more ore than stone?
When several mods add their own resources, mining can quickly become overwhelming. Ores appear everywhere, storage fills up almost immediately, and finding a valuable vein no longer feels particularly valuable.
ReducedOres lets you tone that down.
It reduces how often ores generate and can make the veins smaller, giving you more control over the amount of resources in your world. The goal is not to make mining frustrating, it is to make finding ore feel worthwhile again.

What can be changed?
ReducedOres allows you to:
- Reduce how frequently ores generate
- Scale down the size of ore veins
- Apply the changes across different dimensions
- Affect both vanilla and modded ores
- Add specific ores that should be reduced
- Exclude ores that should remain untouched
Everything can be adjusted through the configuration file, so you can choose between a small reduction and a much harsher mining experience.

Who is it for?
ReducedOres is especially useful for:
- Large modpacks with many ore-adding mods
- Survival and hardcore playthroughs
- Packs built around exploration and slower progression
- Players who want mining to remain important
- Modpack creators trying to prevent resource overflow
You do not need to turn every cave into an empty tunnel. Even a small reduction can make progression feel noticeably more balanced.
Compatibility
ReducedOres is designed to work with vanilla ores as well as ores added by other mods.
It can be used alongside world-generation mods such as Terralith and BetterNether, and with mods that add their own ores, including Create and AllTheOres.
The mod stays focused on ore generation. It does not change loot tables, structures, recipes, or unrelated world-generation features.
Configuration
Adjust everything through the config file:
- ore_size_multiplier - controls vein size
- ore_generation_chance - controls how often ores generate
- custom_ores - adds specific vanilla or modded ores
- excluded_ores - keeps selected ores unchanged
Values range from 0.01 to 1.0. Lower values mean smaller and rarer ore veins.
Less ore does not have to mean less fun.
Sometimes it just means that finding diamonds feels like finding diamonds again.

Project description from Modrinth.
Pick your setup
Reduced Ores by Minecraft version and loader
Choose the version and loader you play, then open the matching release.
1.21.9
1 loader build1.21.8
1 loader build1.21.7
1 loader build1.21.6
1 loader build1.21.5
1 loader build1.21.4
1 loader build1.21.3
1 loader build1.21.2
1 loader build1.21.1
1 loader build1.21
1 loader build1.20.4
1 loader buildShowing the newest 12 of 15 game versions. Older files are in the list below.
Check the dependencies, then try the file in a copied instance before changing a world you care about.
Recent files
Reduced Ores versions and loaders
1.3
reducedores-forge-1.3.jar
16 Mar 2026
1.1
reducedores-1.21.x-1.1.jar
13 Feb 2026
1.2
reducedores-1.20.1-1.20.4-v1.2.jar
12 Feb 2026
1.0
reducedores-1.21.x-1.0.jar
4 Oct 2025
1.1
reducedores-1.20.1-1.1.jar
3 Aug 2025
1.0
reducedores-1.20.1-1.0.jar
6 Jun 2025
Looking for an older file? The official Modrinth project page is in Resources.