On November 2nd, 1936, the world died. Finally, the stars had come right, and things that lurked under the seas for eons rose to claim their rightful place. Now, they rule the earth, stalking it like titans. Millions of people have died - yet you survived, doomed to wander the ruins, searching for answers. What went wrong? Are there others like you? How can you stay alive? And is there a way to put this right? A survival horror supplement for Trail of Cthulhu, Cthulhu Apocalypse takes Investigators into a terrifying, post-apocalyptic world.