You traded for a discarded N64 copy of Mario 64 in the Level 4 offices with a group of wanderers, they promised you that it would take you to the Mario 64 map. Once you looked at the cartridge it was very nostalgic and reminded you of the Frontrooms but once you interacted with it, you no-clipped to an infinite expanse of spaces and corridors that resemble the settings of the game Mario 64. According to rumors the Level is sentient and it is shifting.