It's the turn of the century; magicians and engineers fight to dominate the new frontier. 

CultistCraft: Unbound Frontiers is a mod pack that focuses on turn-of-the-century technology, magic and the occult, and cosmic horrors lying outside the realms of comprehension. From the beginning, you face one pressing dilemma: do you choose the path of the industrial revolution or wizardry? Or, perhaps, you wish to swear loyalty to things that lie beyond the veil. Your journey will prove challenging regardless of your chosen allegiances, but you'll soon acquire many means to tip the odds in your favor, from firearms to spells. By the end, you may find yourself commanding armies, casting legendary spells, and managing an empire.