Sandy Petersen's Cthulhu Mythos 5E
Sandy Petersen’s Cthulhu Mythos is the most comprehensive guide to including Lovecraftian elements in your Roleplaying game, written by the author of the groundbreaking Call of Cthulhu role-playing game. Uses the Dungeons & Dragons 5th Edition Rules.

Sandy Petersen's Cthulhu Mythos 5E - Ghoul Island Act 1 : Voyage To Farzeen
Ghoul Island introduces the Cthulhu Mythos to your heroic fantasy campaign as only the mind that created the horror RPG genre can! Act 1 covers Levels 1 to 5.

Sandy Petersen's Cthulhu Mythos 5E - Ghoul Island Act 2 : Ghoulocracy
The epic story of Ghoul Island continues with Ghoulocracy in which the adventurers investigate a subterranean temple of eldritch horror occupied by the necrophages of Farzeen

Sandy Petersen's Cthulhu Mythos 5E - Ghoul Island Act 3 : Clean Up Crew
The time has come to press their advantage and drive the foul cult of Ghatanothoa from idyllic Farzeen. I

Sandy Petersen's Cthulhu Mythos 5E - Ghoul Island Act 4 ; Ghatanothoa Awakens
Ghatanothoa awakens and the end is nigh. The Great Old One is ascending and a plot, centuries in the making, is coming to fruition.