So there's this game that has a fairly modest but fanatical following out in the gamerculture called Warhammer 40k. Set in the year 40,000, humanity lives in all corners of the galaxy and has a central government of sorts on the world of Holy Terra. That would be Earth after several apocalypses, failed petty interstellar empires, and colonization attempts. Then something like the year 30,000 or so a hyper-human perfect being stepped up from the population of Earth, unified the techno-barbarian tribes, re established a peace with the Martian colony, and ultimately began the impossible task of establishing a unified Galactic Empire of Humanity. He is known only as the Emperor in all established records of the setting and was both the best and worst thing that ever happened to humanity.
To make a long, epicly styled, and marvelous story short, The Emperor is betrayed by one of his clone-generals and the Empire nearly falls to the forces of Chaos. I do not mean nice, cutesy chaos either. Raw forces of sentient corruption and madness that hunger beyond the walls of spacetime. The kind that make you eat your family for kicks and burn whole worlds to test a new toy.
The corrupted general is defeated but the Emperor is mostly slain also after the cataclysmic final battle. He had by this point long since ushered in a Platinum Age, you could say, as marvels of technology and psionic power beyond imagining called the Golden Throne allowed his spirit to cling to his mostly dead body and produce a beacon on Holy Terra called the Astronomican. This beacon is a guide to all ships traveling through the Warp to reach other worlds of the still enduring, but stunted, Imperium of Man.
I won't take up the whole intro with explanation of the setting. There's A LOT. But I'm setting up this thread for general discussion of the game and the story. If you're a noob to 40k feel free to ask something if you didn't understand the stuff you're about to hear. READ THE THREAD FIRST PLEASE as the topic will develop Emperor knows where and your question may well have already been covered.
I would very much like to avoid the minutiae of game mechanics, but won't care too much if it's relevant to what's being talked about. I just don't want to get bogged down too much by it.