https://www.drivethrurpg.com/product/372695/COREthulhu
COREthulhu is powered by CORE, the Creative Options Roleplaying Engine. CORE is a blending of traditional and narrative systems with lots of player facing elements. COREthulhu is set in the turbulent, some may say exuberant, 1920’s. Players will choose a Profession, create a Lifeshaper or two, grab some gear, say a prayer and hope for the best. If you’re lucky maybe the dark eldritch beings that stalk our world won’t notice you but once you start poking your nose into things well………let’s just say you have my condolences.