Released as part of the 40th anniversary of Call of Cthulhu, this handy pocketbook is aimed at anyone—whether veteran or novice—who plays this well-loved tabletop game, but is particularly aimed at those who run games and potentially craft their own scenarios. The tips are gathered into key topics, including but not limited to: preparation, non-player characters, combat, props, inclusivity, golden rules, as well as portraying and using the Cthulhu Mythos. Imagine, if you will, that you are sat with a group of experienced Keepers, each sharing ideas drawn from their experience of playing and running Call of Cthulhu. The collected wisdom is aimed to help you get the most out of Call of Cthulhu. The advice comes from a diverse range of people, some who have been running the game since its birth in 1981, and others who bring a fresher perspective. All of the contributors have provided what they consider to be their most useful and insightful advice. Contributors include: Mike Mason, Becca Scott, Paul Fricker, Scott David Aniolowski, Lynne Hardy, Seth Skorkowsky, Bridgett Jeffries, Sean Branney, Allan Carey, Jo Kriel, Mark Morrison, Keris McDonald, Jason Durall, Matthew Sanderson, Thom Raley, David Larkins, and Bob Geis.