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UltraGear

A mod that adds awesome gear you craft with blocks

UltraGemsMod

Gems, armors and tools

UltraHUD by KuNet

The Ultra HUD for parkour players

UltraMine PrivateRegions

UltraMine Private Regions

UltraMineralsMod by Zeeme, MCreator

MineralMod

UltraOresMod

Ultra ores mod you well Love it Sub to me on youtube soon at Lerrycapetime time

UltraPistol

Adds an UltraPistol To Your Minecraft World

UltraSoftCore by Szernex

UltraHardCore's little brother, aimed to make life harder, but not too hard.

UltraSurvival by Klastris, MCreator

TOSYA

UltraTech by cout970

Ultra technology for minecraft

UltraTools

Awesome tools for an awesome person!

Ultra_Ore

Ultra ore!

Ultraman

Development by MineC

Ultramatrix

A WIP mod indev.

UltramineServer by ExampleDude

lang file for UltramineServer

Ulysses by FXG

Add the help block

Un-Natural Essentials by dsa, MCreator

dsa

UnCraftable's Craftables by wyatt, MCreator

UnDeath! by nekosune

Ever wondered if there was life after death? wonder no more

UnKnownMod by Exysting

Mod for UnKnown Team.

UnLogic by F1repl4ce

A 'Random Things' type mod that adds lots of useful content.

UnLogic II by The_Fireplace

A mod that adds lots of random and useful content.

UnNick Mod by shtruz

Bypasses /nick.

UnaiPortals

Este mod lo ha creado Unai Ortiz para los #Portaler

Unborked by SquidDev

Makes ComputerCraft 1.80pr0 less buggy for 1.10.2

UnbreakEn Mod by MJaroslav

Enchantment that will save your instrument.

Unbreakable

Unbreakable

Unbreakable++ by Sangam1

Adds the ability make stuff unbreakable!.

UnbreakableTools

This is an example mod

Unbreakabler by teampotato

Unchantment Table by Teotw

Retrieve encnantments from items. Built: 11/12/13 09:43 PM

Uncharted by Epidra

Your favourite Biome Panel

Uncle George's Glass Mod by George Kazanjian

Simple mod that only adds new glass

Uncle Jeff's Nethergem Mod by Jeffry Fisher

An apex gem for the nether: As hard as diamond but as enchantable as gold.

Uncle Jeff's Paintings Mod by Jeffry Fisher

16 whole sets of paintings separated by metadata

Uncle Jeff's Pressure Plates Mod by Jeffry Fisher

For each class of mob, a pressure-plate that discriminates among mobs in class

Uncle Jeff's Sensors by Jeffry R Fisher

A moon-phase sensor and a weather sensor

Uncle Jeff's Walls Mod by Jeffry Fisher

A new metadata-variant set of rock walls

Uncle Tomo's Minecraft Mod by Ablaze, Xornop, other friends

Bringing Uncle Tomo to your Minecraft world!

UncleGrandpaMod

Googmorning!

Unclunkify by phantamanta44

Makes life a little better.

Uncomplication

This mod just adds the old version of the new IC2 recipes.

Uncrafter by Jannis234

Did you craft something and you don't need it anymore? Use this mod and get your resoures back!

Uncrafting Blacklist by DoomRater, Noobanidus

Prevent items from being uncrafted in the Twilight Forest uncrafting table.

Uncrafting Mod by Ms_Raven

A simple mod that lets you convert items into the materials used to craft them.

Uncrafting Table by jglrxavpok

Did you ever want to uncraft an item (like your 5 hoes made by error) ? Now, you can do it against 5 levels of XP!

UncraftingMod

This is an example mod

Undead Crafting by Bjf1152

Adds many new things to the game to make use of bone, rotten flesh, and other hostile mob drops.

UndeadPlus by TechGuy543, GuitCube, RandumbDude, MrCompost, Tyler15555, Others

Undead+ adds a range of threatening new mobs to keep your Minecraft world alive and exciting during the night and while you're adventuring through caves.

UndeadUndeadnoMi

Fruta da Imortalidade

Under The Sea by Kashdeya

Adds Rocks and Seaweed for the Void Island mod.

UnderCover by owenl, MCreator

UnderCraftMOD

Ceci est le mod d'UnderCraft

UnderCrafted by Davdavmas, MCreator

UnderGround by PenguinMaster420, MCreator

A mod that adds the Underground update nobody asked for!

UnderMod

MOD BY UNDER

UnderUtilities by Loyto

Tab serveur + player skin + chat

Underarmor

Armor that goes under your players skin.

UndercastMod by skipperguy12, Genius_Fraser, GoldBattle, palechip, xIGBClutchIx, flv92, molenzwiebel

A custom made mod that tracks gameplay stats and has custom guis made for the oc.tc servers

Undercraft by ThePsionic

Minecraft meets Undertale

Underfell

This is still a demo but this is what I like to call the brother update

Underground Biomes by Exterminator Jeff, Grom PE

Adds underground biomes composed of layers of new rock types

Underground Biomes Ore Integration by Harley O'Connor

Extra ore integration for underground biomes.

Underground City Engineering by beanflame, GoldMain, Mr_zhao

Underground Ocean by Reoseah

Small mod that adds large caverns filled with water to world generation.

UnderlineFix by Axer

Fix the bug which has caused unable to type underline on OSX.

Underp Hangables by masa

Fixes the derpyness of the dropped items from Paintings and Item Frames when they are broken.