The Cthulhu Hack (softcover) + complimentary PDF
The Cthulhu Hack is a standalone game of investigation and dealing with the sanity-shattering shock of facing Things Best Left Unknown. The book includes simple mechanics to handle threats and investigation, ready-to-play archetypes and a flexible character creation system, horrors and an overview of the Mythos, and a complete modern day adventure, Save Innsmouth.
The rules come in a 52-page A5 booklet
The rules come in a 52-page A5 booklet