Unkown
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Unlimitable Chests by Andrey Vilange
Unlimited Chisel Works by asie
why
Unlimited Chisel Works - Botany Compat by asie
flowers
Unlimited Chisel Works - Quark Extra by Wollis
This addon adds the limestone blocks from Quark in Unlimited Chisel Works.
Unlimited Chisel Works - TFC1 Compat by asie
TerraFirmaCraft 1 compatibility for Unlimited Chisel Works.
Unlimited Chisel Works - TFC2 Compat by asie
hexagons
Unlimited Colors by Veillardt
16 M Colors for your blocks !
UnlimitedChat by TheCrafter4000
Removes character limitaion in chat!
UnlimitedFuel
WOW UNLIMETED FUEL!
Unliquid
This mod adds the Unliquizer:you can use it for transform liquids in solid blocks.
Unlit Torches by pelep
Unlit torches! This mod adds unlit torches to the game and also modifies other vanilla behavior.
Unloader by Unnoen
Unload dimensions not in use.
UnlockCraft by Diadas
Locks all recipes to unlock during gameplay
UnlovedVanilla by Impelon
A Mod adding many, different features that got left behind in the development of Minecraft
Unmekanikal Refined Obsidian by user, MCreator
Unmending by Vazkii
Nerfs mending while still keeping it usable.
Unmute Mobs by Rick South
A drag-and-drop mod to unmute/unsilence all mobs in the world.
Unnamed Dimension by Mr. Metric
Example placeholder mod.
UnnamedMod
Just some random stuff.