Call of Cthulhu

Call of Cthulhu is a tabletop roleplaying game rulebook based on H.P. Lovecraft's horror fiction. Published in 1981, it established the framework for players to create investigators who confront cosmic horrors and supernatural threats in a realistic world setting. The core rules center on a percentile-based system that reflects both the capabilities and fragility of ordinary humans facing extraordinary circumstances. Players must balance their characters' pursuit of forbidden knowledge against the risk of madness and death, tracking both physical and mental health through mechanics like Sanity points. The book contains character creation guidelines, investigation procedures, combat rules, and a collection of creatures drawn from Lovecraft's stories. It includes sample scenarios and guidance for Game Masters to create their own mysteries set in time periods from the 1890s to the present day. The game system emphasizes themes of cosmic insignificance and the price of knowledge, creating tension between human curiosity and self-preservation. Its influence extends beyond gaming into broader horror and mystery storytelling.

Readers value this RPG sourcebook for its detailed mechanics that blend horror storytelling with investigative gameplay. Players note its rules for psychological stress and character madness create tension. Many highlight how character death and defeat happens more frequently compared to other RPGs, which fits the cosmic horror theme. Common criticism focuses on the complex rules that can slow down play - one reviewer called it "too crunchy and numbers-heavy." Several readers mentioned the 1920s setting feels restrictive. The sanity mechanics drew mixed feedback, with some finding them too punishing. Notable praise comes for the included adventures, especially "The Haunting," which readers recommend for new groups. Ratings: DriveThruRPG: 4.5/5 (2,100+ ratings) RPGGeek: 8.2/10 (3,000+ ratings) Goodreads: 4.3/5 (900+ ratings) Most critical reviews still rate it 3+ stars, with complaints focusing on rules complexity rather than core gameplay concepts.

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🦑 The Call of Cthulhu roleplaying game was first published in 1981 and remains one of the longest continuously published tabletop RPGs in history, second only to Dungeons & Dragons. 🎲 Creator Sandy Petersen wrote the entire core rulebook in just six weeks while working as a computer game designer at Chaosium, and it went on to become the company's best-selling product. 📚 Unlike most RPGs where characters become more powerful over time, Call of Cthulhu characters often face mental deterioration and madness as they learn more about the cosmic horrors they encounter. 🎮 Petersen later worked on iconic video games including Doom, Quake, and Age of Empires, bringing his expertise in horror and mythology to these groundbreaking titles. 🖋️ The game is based on H.P. Lovecraft's Cthulhu Mythos, but Petersen added numerous original elements, including the now-famous Sanity system that has influenced countless horror games since its creation.