Trail Of Cthulhu

Mythos Investigation and Horror in the 1930s

You have to keep the doors to the Outside from swinging open – no matter what the cost in life or sanity. You have to piece together clues from books bound in human skin, from eviscerated corpses covered in ichor, and from inscriptions carved on walls built before humanity evolved. You have to go wherever the answers are, and do what needs to be done to protect humanity. But do you dare to follow… the trail of Cthulhu?

Trail of Cthulhu is designed for investigative play: the challenge is in interpreting clues, not finding them. The game also offers:

• Two modes of play: Pulp (for the “desperate action” feel of Robert E. Howard or Indiana Jones) and Purist (full of philosophical horror and cosmic dread)


• A new take on Lovecraft’s creatures and cults that makes even the most familiar Mythos elements surprising and scary at the gaming table


• Innovative rules for sanity and stability


• A Drives mechanic that addresses the perennial horror RPG question, “Why don’t we just forget we saw anything, and go home where it’s safe?”


• GM advice on how to run a horror adventure


• Detailed notes on designing an enthralling, cohesive investigative adventure using the GUMSHOE system’s clue structure.

You are among the few who suspect the truth about the mad gods at the center of the universe, about the Great Old Ones who dream of clearing off the Earth, about the extra-terrestrials who use mankind in their experiments, about the ancient legends of undying evil that are all coming true. You have to make sure nobody else ever finds out — or the world will wake up screaming…