I recall reading the introduction fiction to an RPG years ago, and I'd like to know its name. The game was set on a Mars colony, just barely self-sufficient or possibly slowly dying off. Shortly before the stars came right and Cthulhu rose up from the oceans, and humanity went mad, dying off in an orgy of violence, at least, those on earth. The people on Mars aren't doing well, what with watching the entire rest of the human race die, and the stress of turning their temporary settlement into a permanent one, a lot go mad.
They also find ruins from a previous civilization there, that are all slightly...wrong. Also they find something stalking them, and people start going missing.
I would love to know what this was. A setting for Call of Cthulhu? A roleplaying game? I think someone mentioned it to me once that it might have been a leak or preview from a cancelled RPG, that was tossed when the publisher found it too dark for their product line.