Sandy Petersen’s Cthulhu Mythos: Yig Snake Granddaddy, Act One – A Land Out Of Time

Based on Sandy Petersen’s Cthulhu Mythos, this adventure is full of hyper brainy ancient species who oppose the PCs. It can be hard to have the enemies who are smarter than the players, or for that matter, than the DM himself! Part one of a planned four-act campaign.