Un reglamento para sumergirse en las pesadillas de H.P. Lovecraft From the introduction: Cthulhu d100 is a complete rule system that will help you run campaigns in the worlds of the Cthulhu Mythos. The system is designed to be easy and fast, as well as being fundamentally compatible with established commercial systems (this allows the use of other publishers' materials). This manual is a partial adaptation of GORE by Daniel Proctor under the Open Game License. The base system was adapted from the collective Arcanum XIII translation coordinated by Alex Werden. Our thanks to all involved.