- Day One Edition includes the Investigator Pack - exclusive private investigator outfit, permanent access to a first aid kit and antipsychotics, and initial supply of crafting resources; map of Oakmont
- An oppressive atmosphere and story inspired by the universe of H.P. Lovecraft
- A vast open world that can be explored on foot, by boat, or even a diving suit
- An arsenal of weapons from the 1920s with which to take on nightmarish creatures
