On an episode of the Schmoes Know Movie Show podcast, Max Landis said that it would be an anthology series based on short horror stories on the Creepypasta websites with the first two seasons about Candle Cove and NoEndHouse.
The third season's theme is called "Butcher's Block", which was based on the Internet Creepypasta story "Search and Rescue Woods" by Kerry Hammond.
The first season was based on the Internet Creepypasta "Candle Cove".
Season three was originally titled "Staircases", but the creators had changed the theme name to "Butcher's Block".
The fourth season's theme was called "The Dream Door" which was based on the Internet Creepypasta story "I Found a Hidden Door in my Cellar".