Herein we discuss how difficult it is for a GM to create, present, and maintain a horror vibe, and then offer some suggestions for how to do it. Join the discussion our Discord here: https://discord.gg/5AtydRUDjX
You can see the full list of Chill horror RPG books available on DriveThru here, and go directly to the free quickstart here. We recommend reading the QS to understand the investigative mechanics, and to download any of the free short adventures (all the ones with the red vertical left margin in the graphic) for ideas about pacing.