Unessential by The Uranometrical Team
The most essential mod for Essential.
UnestableKit
Unestable Kit
Unexperienced by Smileycorp
Disables experience
Unfair Clocks
Not so easy anymore, eh?
Unfathomed Depths Mod by Josh029
Ancient Technology of Mysterious Depth.
Unforgiving Void by The_Fireplace
Sends you to the Nether when you fall in the void.
Ungrab Mouse Mod by Jaideep Singh Heer
This is a simple mod to allow players to ungrab the mouse to do other things on their PCs while the game runs.
Ungui by Mrkol
Declaring a war on GUI screens! This was made as part of MODJAM3. If you are reading this in 2014, then I probably got into top 10. Otherwise I would totally be all sad and stop modding for a couple more months :(
Unhealthy Dying by Mrbysco
Losing health from dying.
UniDict by WanionCane
a mod about unifying all the things.
UniLib by CDAGaming
A common set of Utilities, designed for over 50 versions of Minecraft!
UniMixins by makamys
UniMixins composite jar consisting of the following modules: Mixin (UniMix); Compatibility; Mixingasm; SpongeMixins; MixinBooterLegacy; GasStation; GTNHMixins; MixinExtras
UniMixins: Compatibility by makamys
UniMixins module that improves compatibility and helps debug crashes.
UniMixins: Future Compatibility by makamys
UniMixins module that makes the mod usable on 1.8.9 ~ 1.12.2.
UniMixins: Mixin (UniMix) by makamys
UniMixins module that provides the UniMix fork of Mixin (version: unimix.0.12.2-mixin.0.8.5).
UniMixins: MixinBooterLegacy by Rongmario, tox1cozZ
UniMixins module that provides MixinBooterLegacy extras and MixinExtras with MixinBooterLegacy's package name.
UniMixins: MixinExtras by LlamaLad7
UniMixins module that provides MixinExtras (version: 0.2.0-beta.8).