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

Yes. FermiumMixins is free to download from Modrinth. Its license is LicenseRef-All-Rights-Reserved.

How do I add it to my Nxeon server?

Use “Add to a server” on this page, or open NxLabs from your dashboard. We install it, restart your server and switch it on.

FermiumMixins — Minecraft Mods

About FermiumMixins

From Modrinth

General purpose Minecraft and Minecraft mod tweaker and fixer

FermiumMixins is a general purpose mixin tweaker mod with multiple patches and tweaks to vanilla and various mods.

Sister mod of RLMixins (https://modrinth.com/mod/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:

Spoiler

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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Highlights

From source data

Game versions

Built for Minecraft 1.12.2.

Loaders

Runs on Forge.

Footprint

Rated a light load on a server.

What kind of mod it is

From the catalog

Listed on Modrinth as “Mods”

Gameplay & overhauls

New mechanics, content and overhauls that change how the game plays.

Runs on your server

From source side support

Modrinth lists FermiumMixins as required on the server. Check its Modrinth page to see whether players need it too.

Compatibility

Game: Minecraft
Loaders: Forge
Runs on: Serverrequired on the server
Game versions: 1.12.2

Verified at the source

✓ModrinthOfficial listing, checked 2026-10-01Open ↗
✓Authorfonnymunkey, as published on Modrinth
✓LicenseLicenseRef-All-Rights-ReservedFree

FermiumMixins