I read this story about a mod for Morrowind (which may or may not actually exist) that was... Unusual, to say the least. Long story short, the entire gameworld undergoes a slow transformation, until at last the entire world is so dark you cant see 2 feet in front of you 24 hours a day, and all NPCs (friendly and hostile alike) just stand outside staring into the sky, saying only "Look to the stars" when spoken too. There are no stars.
Theres also something about a dungeon near the end, but the whole thing is way to long to recap here. I cant find it for the life of me, so if anyone could post a link to it here, that would be nice. Anyway, the whole thing legitimately creeped the fuck out of me, and many bricks were shat when the guards in Skyrim said the exact same thing to me. ;.;