Sieves
AwesomeDragon97

Adds sieves that are used to separate (occasionally) valuable debris from sand.

Lava Ore Gen
Coder12

Makes the lava turn stone into ore over time.

Multitools
ChimneySwift

Adds a series of multi-purpose tools

Power Rangers Modpack
LC Creations

Adds power rangers and an API to create your own.

Missions
BuckarooBanzai

Adds blocks to create missions with rewards, timeout and penalties.

Sailing
cakenggt

Live in a tropical paradise where you can sail, mine coconuts, etc.

Aether
iarbat

Adds a hard to obtain yet powerful substance called Aether.

Bed Notifications
Bob64

This adds chat messages that tell other players when a player leaves or enters a bed and when players can sleep.

Basic Anvil
MikeRedwood

Adds an easy tool repair craft

Lifesteal Mod
Jo5629_

Provides a lifesteal mod.

Utilities for Underch - extension pack
Hypernoot

Extend the Underground Challenge by miscelaneous utilities and change some recipes

Stairs Recycle
DumbDave961

Turn stairs into ingots, slabs, or different stairs. Smelt cobble stairs into stone stairs. Highly recommended for Oneblock survival. Based on Simple Recycle by Jolesh.

Infinite Wood Mod
thehumanarachnid

You can now get infinite wood in survival

Teacher: Locked Chests
1F616EMO

Tutorial for MTG Locked Chests

Meze
Calinou

A special ore that kills you when mined.

Hard Trees
octacian

Require tools to break trees and introduce beginner-tier rock tools.

Unprotector
Kimapr

Bypass Protection Sorcery in survival

Grave
ElCeejo

Adds an eerie biome with multiple mobs.

Wings
xXNicoXx

Wings is a mod whiche allows server owners to give players fly privs while holding the wings (Like binoculars) made by xXNicoxx

LootChests Modpack
mt-mods

Modpack adding a lot of various loot containers across the world to be found and providing an API, resources and integrations for other mods

Nether Mobs
Dirkfried

Add monsters and dragons to your nether world.

X Bows Extras
SaKeL

Adds more bows/guns and arrows using X Bows API.

Power Guns
shaft

A mod that adds laser guns and a force gun

Dragan-uisge (Water Dragon)
Homiak

Adds powerful Water Dragons, useful craftitems and Draconic blocks.

Thirsty
csirolli

Adds a "thirst" mechanic, similar to hunger.

Technic Armor
mt-mods

Adds armor made from lead, brass, cast iron, carbon steel, stainless steel, tin and silver

Pegasus
Scottii 🐉

Adds consistantly designed legendary flying horses - Pegasi

Wilhelmines Sounds
Liil

Adds ambient sounds to the landscapes of Living Floatlands, Living Desert, Living Jungle, Living Caves and Natural Biomes

X Spawners Mobs
SaKeL

Adds mob spawners.

Sprinting
xXOsielXx

Allow sprinting/running with double tap

Stamina++
swagtoy

Adds stamina and sprinting (no hunger!)

Super Foods!
LoopyAntenna

Adds many new foods, such as cake, watermelon, coconut, and cheese! You can even play in Survival!

Armor HUD bar
Wuzzy

Adds a HUD bar displaying the current damage of the player's armor.

Falls
Just_Visiting

A Particle-based Waterfalls/Lavafalls Mod

Log Spikes
Silver Sandstone

Adds spikes made of various types of tree.

Castle Weapons
FaceDeer

Provides several medieval weapons for use around castles

The Composter
Dino0815

Adds a composter to make dirt out of your leaves.

Sleeping Mat
kestral

Simple sleeping mat made out of grass.

Strange Weapons
Robot10&Scheletor

Adds many strange and improbable weapons

Underground Challenge
Hypernoot

Explore all 62 underground biomes!