Uses Chaosium's Basic Role Playing System (BRPS)
Published in May 1992, this is the 5th edition of the popular horror RPG based upon H.P.Lovecraft's Cthulhu Mythos. A 240pg softback book, the first 64 pages are Rules, the rest of the book is Mythos.
This edition improves upon the previous editions without making substantial changes, by making the rules and content more coherent and complete, adding some dozen Skills, removing others (though not making them illegal), adding more characters, stats, occupations and so on. The game still focuses on horror, terror and the gradual... loss... of... your... SANITY!