An A-to-Z Reference for Lovecraftian Mythos Design
From the back of the book:
A is for Angles, B is for Books, and C is for Cultists. Game masters of any rule system will find twisted inspiration for creating madness-inducing game ingenuity from ancient, underground worlds. The tome contains haunting text and cleverly authored random tables to help you create necronomic stories of forbidden traits, dangerous powers, and lore transcribed from the ravings of madmen. Beware the fear-provoking illustrations by artists in the thrall of the elder gods that will haunt your dreams. All of this, and more, from the libraries of Miskatonic University and Goodman Games!
This grimoire is compatible with all fantasy and horror role playing games.