Chaos Alchemy

A modpack that contains mods that will spice up the game world with new biomes, randomised bosses and many new items and recipes to tinker with.
It is designed to be chaotic and deadly and will surely keep you on your toes.
It has:

Chance Cubes - Randomised drops that will either help you or hinder you greatly.
Beyond Earth - You can go to space!
New Mobs - Some are cuddly and friendly while some will haunt your nightmares. There are even dragons!
New Biomes - Breathtaking vistas and harsh climates - underground, overground and across dimensions.
Twilight Forest - A dimension to add variety; includes new mobs, bosses and a brand new world to explore.
New Bosses - Minibosses show up every once and a while during each night and some bigger and badder ones are scattered around to challenge you when you are prepared.
Guns - Advanced weaponry to take your arsenal to a new level.
New Tools and Materials - Lots of new shiny new things to collect and turn into tools with Tinkers Construct.
Magic - Several magic mods to satisfy your inner mage
Technology - Several machines to amplify your resource aquisition, production, refining and make storage easier and more efficient, making your life and little more streamlined and manageable

May have some bugs that need ironing out.