TheKit features multiple changes to world generation, adding new biomes, structures and dungeons to explore throughout the world. Together with additional mobs this creates a dangerous environment filled with hidden rewards for brave adventurers.
To help you face these adverse conditions mods like Tinkers Construct allow you to create various types of special tools and armor while techmods like EnderIO give you the option to automate and improve your work by building anything from item and fluid transporting pipes all the way to powered machinery such as electric furnaces and automated farms.

Beyond the now more dangerous vanilla dimensions there are also several new, at least as dangerous but exciting dimensions to explore giving you plenty of things to do.

As of 1.0.0 this modpack includes the following mods:

Actually Additions
Actually Baubles
ActuallyComputers
Aether Continuation
AppleSkin
Applied Energistics 2
AtomicStryker's Battle Towers
AtomicStryker's Infernal Mobs
Atum 2: Return to the Sands
Bad Wither No Cookie - Reloaded
Baubles Azanor13
BdLib
Bed Patch
Better Advancements
BetterFps
BiblioCraft
Bigger Packets Please
Binnie's Mods
Biomes O' Plenty
Bloodmoon
Bookshelf
Chicken Chunks 1.8.+
Chisel
Client Tweaks
CodeChicken Lib 1.8.+
CoFH Core
CoFH World
CoFH: Vanilla+ Tools
ConnectedTexturesMod
Construct's Armory
Controlling
Cooking for Blockheads
CraftTweaker
Diet Hoppers
Enchanting Plus
Ender IO
Ender IO Zoo
Ender Storage 1.8.+
EnderCore
Extra Utilities
Extreme Reactors
Farming for Blockheads
FastWorkbench
FoamFix
Forestry
FTB Backups
Gendustry
Gendustry JEI Addon
Hexxit Gear
Hwyla
Immersive Cables
Immersive Engineering
Immersive Petroleum
Immersive Tech
Industrial Foregoing
Infinite Tipped Arrows
Integration Foregoing
Inventory Tweaks
Iron Backpacks
Iron Chests
IvToolkit
JEI Bees
JEI Hider
JEI Villagers
JourneyMap
Just Enough Energistics (JEE)
Just Enough Items (JEI)
Just Enough Pattern Banners
Just Enough Petroleum
Just Enough Reactors
Just Enough Resources (JER)
LibraryEx
Login Shield
Magic Bees
Mantle
Mod Name Tooltip
ModTweaker
Morpheus
Mouse Tweaks
MTLib
Natura
Nature's Compass
Netherending Ores
NetherEx
NetherPortalFix
No Recipe Book
OpenBlocks
OpenComputers
OpenModsLib
Patchouli
Phosphor
Placebo
Project: Vibrant Journeys
Pyramid Plunder
Quick Leaf Decay
Recurrent Complex
Redstone Flux
Roguelike Dungeons
Rustic
Rustic BOP Woods
Shadowfacts' Forgelin
SwingThroughGrass
TESLA
Tesla Core Lib
The Aether
The Twilight Forest
Thermal Cultivation
Thermal Dynamics
Thermal Expansion
Thermal Foundation
Thermal Innovation
Tinker's JEI
Tinkers Aether
Tinkers Construct
TipTheScales
ToroHealth Damage Indicators
UniDict
Waila Harvestability
WanionLib
ZeroCore