The game takes place in a fictional dystopian version of Amsterdam called New Amsterdam, as the player progresses through the story, the character Oldhead and Coil mentioned the history of Old Amsterdam and the remnants of the location. Oldhead mentions in Mataan that trees used to exist in Old Amsterdam before being extinct, saying "Do you know what a tree is youn'un?! we had tons of them!". In the same area, when the player does Coil's sidequest, one of the messages Coil sends to the player mentions Mataan as a river, implying that the location was at one point a river. As of now, there are 2 hidden locations that could be remnants of Old Amsterdam:

• The first location is in Pyramid Island at the warehouse maze. If the player drops from a certain hole in the maze, they can find the only tree that exists in the game as well as some abandoned buildings.

• The second location is at Versum Hill at Bazaar. Once the player reaches the top and follows a path to a billboard, they can find a vent and enter by sliding into it. The player will then discover an area similar to the concept of the Backrooms (a 2019 creepypasta depicting a seemingly endless maze of empty office rooms, and is associated with liminal spaces), with the layout being a maze structured around an abandoned building. Once the player navigates the area, they can find a coffin in a room with the head of the tomb resembling the mask DJ Cyber wears that originally belonged to Felix. The location of the areas and the character descriptions seems to imply that New Amsterdam is built on Old Amsterdam. It's currently unknown if the tomb is part of an unsolved mystery or simply an Easter egg.