Level -4

Description
Level -4 appears as an infinite tunnel made out of materials constructed with carbon. A majority of carbon dioxide gets released into the atmosphere. Unlike the real world variant, the levels version is safe for breathing in. The interior of Level -4 is cracked and highly unstable, making it a must for you to make it out as fast as you can. The levels lighting is faulty. Even light sources like flashlights will flicker with no apparent means of why it happens. Some people say that the Smilers found in this level have gained the ability to do so, while others say it was because of the carbon like atmosphere. This level is split up into 4 sectors.

Sector 1
Sector 1 is the most stable part of the level. Carbon dioxide levels are really high and emit a sweet smell. Entities are not so prevalent within this sector other then Facelings and the levels own entity, Carbonations. This sector is where you start at and is the main area of the level. Around every 5 kilometers, an intersection will appear. You can either decide to go forward, back the way you came, left or right. No air is provided in these intersections so make a decision before you run out of oxygen to breath. The levels walls are made of Cast Iron, and lighting is at it's most finest.

It houses items similar to that of space for unknown reasons. These space like objects are safe to handle, with the threat level of these objects being low at best. Should one drop it, the object will create a mini black hole, sucking the wanderer before disappearing from the face of The Backrooms. Other weird occurances within this sector is the stary ceiling. Nobody knows why the ceiling acts this way, but most presume its due to the carbon dioxide levels causing hallucinations. When travelling far enough in this sector, a door will appear. Entering this door will take you to Sector 2.

Sector 2
Sector 2 has low carbon dioxide levels, and the walls are made out of rubber. Entities here spawn frequently, with the most common in this part being Skin Stealers. The effects of sanity are deeply impacted by the low crabon dioxide levels, and, for no real explanation, drains faster then normal. The sector is very damp, and at times increase the carbon dioxide level. You will be presented with pipes that spew water particles into the air, which explains the damp like enviorment. Food can be found in vending machines and are deemed safe to eat. The vending machines which, fortunatily enough, have hallways behind them that contain Almond Water. These areas are hard to access however as you need to push the machines out of the way. The vending machines are typically heavy, so tople them over if pushing isn't enough.

Strangely enough, doors can't operate properly. No matter how much you push or pull, they don't open. This can be explained in one of two ways. Either objects are behind the door, holding it shut, or it has a lock that can only be accessed from the other side of the door. The lighting in this sector is not great, as the lights go on and off at random intervals. Due to the low amounts of carbon dioxide, the lights are not able to funtion as intended. Intersections are non-existant in this part of the level, meaning this sector goes onto a straight path. Finding a crawlspace will lead to Sector 3, and sometimes Sector 4, but isn't recommended. A ventilation shaft can appear every so often, and entering it has a high chance to take you to Sub-Sector 2.1.

Sub-Sector 2.1
Sub-Sector 2.1 is what is presumably an infinite ventilation system. Not much is known about this sector and its carbon dioxide levels. There is a constant blue hue that shines throughout this sector and has been deemed "calming" upon wanderers. This "calming" sensation has made wanderers agressive towards each other, and any encounters with these crazed wanderers is considered a death sentence. The wanderers are seen with knifes in their hands. As to how they got these weapons is still a mystery. The only exit out of this sector is via breaking any vent grate which will lead to Sector 3.

This sub-sector has the occasional fans, which give a cool breaze on anyone in this sub-sector. While this sector is, strange in properties, it is an optimal travel tool to other levels in The Backrooms. The ventilation system has little to no grime, and when it does, the air in that area will be blank. Should the blue hue go out, it will then be replaced by a red hue, said by wanderers to have no special properties in purticular. People speculate that this is the day and night cycle for Sector 3, but yet again, it's still undetermend. This sector should only be traversed if the red hue is emitted from the grate.

Sector 3
Sector 3 is a cramped, bioluminescent crawlspace that has a medium amount of carbon dioxide levels. This area has no entities, and has little to no lighting. Flashlights are heavily advised when entering this sector. Something odd in this place is that the walls are made out of some unknown stone, that is cold and soft to the touch. Most people say that there is a day and night cycle here, but how to determine this is currently unknown at the moment. There is also a huge supply of food which range from chocolate to pizza. No matter where it is found, it always seems to be edible.

Interceptions are very common and can appear once every 50 meters. Unlike Sector 1, carbon dioxide is still present. These intersections can lead to other levels seemingly at random. The only way to exit this sector is via seeing a bright light source and crawling toward it. Upon doing so you will arrive at Sector 4. Occasionally you can find areas devoid of color. These spots should be avoid at all costs if you don't want to go to Level 1.5.

The space around you is 1 meter tall, and 10 meters wide approximate. Studies with the walls suggest carbon monoxide can emit from them. These areas are usually found in intersections and are diffrent to the normal colors. Walls that are normal are white, while the walls emitting carbon monoxide are grey. Like carbon monoxide in real life, it is very dangorous to inhale. You're skin will turn pink, with sanity going down at an increased rate, turning that wanderer into an Insanity. In advance, these areas should be avoided at any time. How these areas form is unknown, but has been theorized to grow mold overtime. In some very rare instance, it just pops out of nowhere without an explanation.

Sector 4
Sector 4 is the last sector any body can come across. Carbon dioxide levels go all over the place. One time it can be high, other times it is low. The levels walls, floor, and ceiling are made out of scrap metal, paper, and cardboard boxes. Entities are extremely common and the ones that can appear are Hounds, Smilers, Death Moths, Crawlers, etc. The lights give off a faint humbuzz that can make one go [REDACTED] and make them feel like they are being watched, or they are watching something. This sector is where most of the deaths in Level -4 happen, so it is advised to go back into the previous sectors or exit out of Level -4 as soon as possible. The scrap metal ranges from that of cars, support beams, and electronics like phones, tablets, and computers.

This is also the longest sector in Level -4 and without a doubt, the most explored. Almond Water and Food can be found under the piles and piles of metal there is, and can be used to craft Carbon Masks. These masks are used to control the carbon near the wanderer so that they can breathe in the air they intake around them. Some dead bodies can be found under the cars and has these dead bodies have a chance to be metal itself. This phenomenon is still being investigated on why it happens. So far nothing has been found about this phenomenon.

Colonies and Outposts
There are no known colonies or outposts on this level.

Entrances
The main way to enter is on Level -4.6 by noclipping. Another way is on Level -3 but it isn't concrete.

Exits

 * To exit, go into the color less areas of sector 3 to get to Level 1.5.
 * Crawl into cardboard boxes found in sector 4 to get to Level -4.6.
 * Noclipping in sector 4 will take you to Level -5.
 * Entering one of the intersections of sector 3 has a chance to lead you to any level in the Backrooms.