CurseForge · Minecraft mod
FermiumMixins
General purpose Minecraft and Minecraft mod tweaker and fixer
Quick answer
Which FermiumMixins release should I use?
FermiumMixins-1.0.13.jar targets 1.12.2 with Forge. The project page does not say whether this file belongs on the client, dedicated server, or both. All 1 required mods have matching files.
Where it goes
Is FermiumMixins required on the client, server, or both?
The project page does not say whether this file belongs on the client, dedicated server, or both.
The source does not explicitly classify this release as client-only or server-only.
What else does FermiumMixins-1.0.13.jar need?
FermiumMixins-1.0.13.jar. Change the file and its required mods may change too.
Install FermiumBooter first. We found matching files for this game-version and loader setup.
We only count dependency files that match this setup. A file for another loader does not fill the gap.
Before you install it
Add FermiumMixins without breaking your instance.
Built for FermiumMixins-1.0.13.jar. Pick another file and the loader, install side or required mods may change.
- 01
Stick to this file
Use FermiumMixins-1.0.13.jar. It targets 1.12.2 with Forge; another release may have different loader, side or dependency requirements.
- 02
Bring the mods it needs
Install FermiumBooter first. We found matching files for this game-version and loader setup.
- 03
Put it on the correct side
The project page does not say whether this file belongs on the client, dedicated server, or both.
- 04
Pick the file you checked
Use the “Get this file” button beside FermiumMixins-1.0.13.jar. It opens that exact file at the source.
About this project
What does FermiumMixins add?
FermiumMixins is a general purpose mixin tweaker mod with multiple patches and tweaks to vanilla and various mods.
Sister mod of RLMixins (https://www.curseforge.com/minecraft/mc-mods/rlmixins) which focuses on patches for the modpack RLCraft.
Both mods can both be used at the same time and are fully compatible.
FermiumMixins currently contains over 170 different tweaks and patches for both Minecraft and mods, ranging from new features to performance improvements and bug fixes.
Every single tweak is toggle-able in FermiumMixins' config and includes simple mod compatibility warnings.
By default all config options are disabled for full compatibility with other mods.
Current Patched Mods:
AdvancedRocketry
AnvilPatchLawful
AstikorCarts
Battletowers
BetterFoliage/RLFoliage
BetterNether
BetterQuesting/BetterQuestingStandard
BiomesOPlenty
Bloodmoon
BountifulBaubles
CarryOn
Champions
Charm
ClassyHats
CodeChickenLib
CorpseComplex
CosmeticArmorReworked
DefiledLands
Disenchanter
DoomlikeDungeons
DramaticTrees
DynamicSurroundings
ElenaiDodge
FancyMenu
FirstAid
FoodExpansion
ForgottenItems
InfernalMobs
Inspirations
ItemPhysics
JEI
Locks
LostCities
LycanitesMobs
MoBends
Neat
NetherAPI
NoTreePunching
OpenTerrainGenerator
PotionCore
QualityTools
Quark
Reskillable
RoughTweaks
SereneSeasons
SimpleDifficulty
SpawnerControl
Switchbow
Toolbelt
Waystones
Report any issues to the Github.
Depends on FermiumBooter.
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Project description from CurseForge.
Pick your setup
FermiumMixins by Minecraft version and loader
Choose the version and loader you play, then open the matching release.
1.12.2
1 loader buildCheck the dependencies, then try the file in a copied instance before changing a world you care about.
Recent files
FermiumMixins versions and loaders
FermiumMixins-1.0.13.jar
26 May 2026
FermiumMixins-1.0.12.jar
19 Feb 2026
FermiumMixins-1.0.11.jar
23 Oct 2025
FermiumMixins-1.0.10.jar
22 Oct 2025
FermiumMixins-1.0.9.jar
26 Sept 2025
FermiumMixins-1.0.8.jar
24 Sept 2025
FermiumMixins-1.0.7.jar
14 Sept 2025
FermiumMixins-1.0.6.jar
30 Aug 2025
FermiumMixins-1.0.5.jar
27 Aug 2025
FermiumMixins-1.0.4.jar
19 Jul 2025
FermiumMixins-1.0.3.jar
18 Jul 2025
FermiumMixins-1.0.2.jar
12 Jul 2025
Looking for an older file? The official CurseForge project page is in Resources.
