Levels
This page pertains to normal levels. For sub-levels, click here.
Overview
Levels form the framework of the Backrooms, and vary greatly in size, danger, and habitability. These levels tend to be infinite in size, although levels with borders are not unheard of. They often provoke a feeling of uncanny familiarity to those within. With the complete absence of intelligent life forms besides the individual within any given level, the negative effects of isolation1 tend to arise, and the individual ultimately ends up either descending into complete psychosis or losing all emotional feeling.
The laws of physics and nature attributed to reality are vastly inconsistent with the confines of these levels. Certain levels are logically consistent with what the individual may expect. However, others go far beyond the comprehension of humanity, breaking the standards of mathematics and science as we know it.
The documentation of levels proves to be a difficult task; cataloging everything about the Backrooms would be impossible. However, with the severe time instability2 outside the borders of reality, evidence of these levels tend to appear at a greater rate than anticipated. Every page contains everything we know about each level, including the environment, dangers, entrances, and exits. If you know of or have evidence not yet documented, immediately contact the Record Analysis and Verification Division.
  1. These effects include (but are not limited to) paranoia, hallucinations, memory loss, emotional instability, schizophrenia, suicidal ideation, and psychosis.
  2. It’s unknown what the exact time dilation may be within the Backrooms, as it proves inconsistent with every examination. However, a few experiments have approximated that a year in the Backrooms equates to 1-3 days in reality.

Level Class
Every level has one of 6 standard classes attributed to it, as a general representation of the overall attributes and danger of any given level through an organized system. The class of any given level is shown as a box at the top of the level's page, with the class identification at the top, and general details below. These details include the psychological danger, traversability, exit accessibility and geometry of the level.
Danger
If a level is “Environmentally safe”, it means the level lacks any sort of danger that would otherwise make it a significant threat. Levels in this category usually mean that the only dangers posed to an individual are the general side effects of isolation, generic injuries such as stumbling, or themselves.

If a level is “Environmentally unsafe”, it means the level is actively and significantly more unsafe to an individual than normal, with extra dangers, whether it be physical or psychological, posed to the individual. Levels in this category could involve physical dangers, like darkness or heights, or supernatural dangers, such as boosted anxiety, depression or stress.

If a level is “Environmentally lethal”, it means the level is one of the most dangerous levels to an individual, and should be avoided by anyone within the Backrooms, even if they think they’re prepared. Recovery from any physical or psychological damages are highly unlikely, or even impossible.

Exits
If a level has "Accessible exits", it means the exits are not actively hard to find. This usually implies the individual simply has a random chance to stumble upon an exit, or the exit is in a relatively easy-to-reach, fixed location. Note that this has nothing to do with how often the exit may appear, as the individual has an eternity to find it either way.

If a level has "Obstructed exits", it means the exits are typically blocked by some sort of challenge or threat, or otherwise are actively harder to find, outside of raw chance. This could imply that the exit is behind a locked door, a puzzle, or otherwise forces the individual to go through one or more tasks before reaching the exit.

If a level has "Inaccessible exits", it means that exits are (as far as what is known) completely inaccessible or non-existent, and the level usually implies a dead-end with no way out. Levels such as these should be avoided at all costs, unless the individual wishes to be trapped in a singular level for the rest of eternity.
Linearity
If a level has “Linear geometry”, it means the layout and geometry of the level is Euclidean, and matches up with the geometry of reality. On the other hand, if a level has “Non-linear geometry”, it means the opposite; the geometry of the level is non-Euclidean, and the layout will typically have a tendency to overlap and bend in irrational ways, although there is never any visual distortion. This is detailed further in Level 0.

Normal Levels
Levels 0-99
Level 0 - "Tutorial Level"
Level 1 - "Industrial Warehouse"