The long-awaited d20 adaptation of Call of Cthulhu in one all inclusive rulebook. Since the early 1900's, H.P. Lovecraft has been considered one of the top writers in the entire horror genre. Elements of his work have appeared over the years in numerous horror arenas, but now roleplayers can delve into a campaign centered around the author's popular Cthulhu Mythos. The Call of Cthulhu Roleplaying Game contains everything needed to play or narrate a roleplaying campaign, including all core-game rules for the d20 game system.