From Atlas Games website:
Unknown Armies is the roleplaying game of transcendental horror and furious action: Pulp Fiction meets Hellraiser.
In Unknown Armies, players take the roles of movers and shakers in the occult underground, fighting a battle for the ultimate prize: ascension to a higher plane and a hand in creating the next incarnation of reality.
Soon the cosmos will die and be reborn. Next time around, the world might be a terrible place -- or it could be a paradise. Someone gets to decide. Might as well be you. You could chart the course of reality itself, and make a new world in your image. You could be a god.
The problem is, lots of people have the same idea. Magickal adepts duke is out with gun-toting enforcers and weirdos of every stripe. Clockwork humans and plodding golems slip through the cracks of society. Entropics eat your memories and spit them back at you with poison added. Fringe groups like the Sect of the Naked Goddess, Mak Attax, The True Order of Saint-Germain, and the New Inquisition have all set their sights on the coming apocalypse and put their ante on the table. The only people you can trust are your friends are yourself, and you're not always sure about yourself.
It's a pulp apocalypse, and the players have front-row seats for the steel-cage death match of all eternity.