"If you're not careful and you noclip out of reality in the wrong areas, you'll end up in the Backrooms, where it's nothing but the stink of old moist carpet, the madness of mono-yellow, the endless background noise of fluorescent lights at maximum hum-buzz, and approximately six hundred million square miles of randomly segmented empty rooms to be trapped in.
God save you if you hear something wandering around nearby, because it sure as hell has heard you…"
Class 1
Environemnt: Unstable
Geometry: Non-Linear
Danger: Relatively Safe

The first picture ever taken of Level 0.
Level 0 is the 1st Level of the Backrooms.
Description
It's the first level that wanderers stumble upon to when no-clipping. The level resembles the backroom of a empty retail outlet. The walls feature a yellow wallpaper and the floor is a damp carpet with a mysterious fluid. The ceiling has inconsistently placed fluorescent lights. Level 0 is presumed to be 600 Mio. km2 in surface area.
You're unable to communicate with any wanderer in Level 0, no matter what form of communication is used. Which made some wanderers go insane and get extreme paranoia and isolation while staying in the level.
Wanderers may find stairs going up or down. In total, there's about 3 Floors in the level and all have different environmental properties. Wanderers mainly spawn in The Middle Floor. The Middle Floor is where Level 0 is at a normal state. The Upper Floor has constant light flickering and wanderers get a lot of hallucinations there. The Lower Floor is darker than the rest of the other floors portrayed in Level 0. Doors and windows also exist in the level, transferring anyone to another level, if entered. Some areas of Level 0 contain red wallpaper. It's ill-advised to enter these rooms, due to the reason that they're considered traps.
Stairs going down in Level 0.
The Upper Floor in Level 0.
Some walls have electrical outlets which the source of power they use is unknown. Wanderers may stuble upon the Manilla Room. The room contains different wallpaper and a table in the middle with a book. This is the only place where Wanderers can meet each other in Level 0. The book contains some basic aspects about the Backrooms.
Entities
Level 0 has no entities. Wanderers who claimed to spot one were hallucinating. The only real danger is hallucinations, isolation and paranoia.
Entrances and Exits
Entrances
- Finding a wall that makes you uneasy in the real world will take you to Level 0.
- Stairs going up in Level 44 takes you to Level 0.
- Some yellow doors, found in other well-known levels can also lead to Level 0.
Exits
- No-clipping in a wall will take you to Level 1.
- No-clipping in the ceiling will take you to Level -0.
- Rarely, finding a room with red carpet will take you to Level 0.2.
- Breaking through the floor will take you to The Basement.
- Finding a yellow door will take you to Level 44.
- Finding a room with red wallpaper will take you to The Red Rooms. (DONT)