The Backrooms
Level 0: The level showed in the original Backrooms photo, featuring all of the weird and creepypasta's most well known features - moldy carpet, based on only one color yellow walls and buzzing fluorescent lights. One of the things created by users for this level are dogs, described as Hounds. Another feature of this level is a noclip zone, which can bring wanderers back to Earth's dimension, return them to the starting point of Level 0, or to another level with different entities.