(Translated from the back of the book) Cthulhu - the horror role-playing game on the motives of the author Howard Phillips Lovecraft, probably the most influential and important author of the 20th century in the field of horror fiction. Here his world comes alive. Cthulhu - Das Grundregelwerk (The basic rules) is the indispensable tools for the game master to immerse a group of players in the world of H.P. Lovecraft. Here you will find all the necessary rules and information about the terrible Cthulhu Mythos, his forgotten tomes, ghastly creatures and powerful gods, spells and magical rituals. In addition to a guide on how the GM successfully masters cthuloid gaming evenings, two adventure ready for entry into the cthuloid horror are contained. The rulebook is now available in the new, improved edition 7; no further rulebooks are required.