chaosium

“We live on a placid island of ignorance in the midst of black seas of infinity, and it was not meant that we should voyage far.” —H.P. Lovecraft W...

"No swords. No wizards. Just regular humans, in way over their heads as they work to uncover the mind-shattering horrors of the Lovecraftian mytho...

A Keeper (Game Master's) Screen for the Call of Cthulhu roleplaying game, featuring artwork from the Orient Express adventure.  Details System: Bas...

The Great Old Ones ruled the earth aeons before the rise of humankind. Now they sleep — some deep within the enveloping earth and others beneath th...

This Starter Box contains everything you need to start playing Call of Cthulhu—the tabletop roleplaying game of mystery and horror. Players take on...

This updated version of the Starter Box contains everything you need to start playing Call of Cthulhu—the tabletop roleplaying game of mystery and ...

The Two-Headed Serpent is an action-packed, globe-spanning, and high-octane campaign set in the 1930s for Pulp Cthulhu. The heroes face the siniste...

In this solo roleplaying adventure, take on the role of Dr. L. C. Nadelmann, an anthropologist from the renowned Miskatonic University in Arkham, M...

The crowds gather baying for blood, while the “chop-chop-chop” of the guillotine calls out… The blade is poised, a shining length of bright sharp s...

The Call of Cthulhu Keeper Screen Pack is an essential play aid for those running games of Call of Cthulhu 7th edition. This Keeper Screen is mount...

It all began when, as leading scholars at Miskatonic University, you were gathered together to discuss who would be awarded the coveted position of...