Level 4 appears to be an empty office building completely devoid of furniture. Certain rooms in this level have windows, but all should be considered traps and avoided at all costs.
Because of the lack of beings, many Wanderers naturally congregate on Level 4. Additionally, scattered around the level are water coolers, water fountains, and vending machines containing Almond Water, which makes collection of the substance much easier. Level 4 is considered the best place to meet other Wanderers and gather supplies before moving on to later levels.
Entities
Level 4 is mostly devoid of entities; only Hounds and Dullers have been reported thus far.
Colonies and Outposts
There are currently 6 known colonies and outposts in Level 4.
B.A.S (Backrooms Analytical Squadrant)
The group consists of scientists skilled in certain areas, as well as architects;
The group is known for their research, and has discovered many things about the Backrooms;
They are mostly friendly and open to trade, although a lot of them are quite reserved and not very open to newcomers.
Amor Incrementum
This group is a religious cult who worships agriculture;
This group is relatively small, having only around 10 members;
The only plants they grow are various species of mold, harvested from the walls in Level 0 and Level 1;
They're friendly but are not normally up for trade. However, if you have religious objects, such as those depicting Jesus or other religious entities, they're (normally) willing to trade.
T.B.D [To Be Determined]
The group likes to hoard things;
The group has only 29 members;
The group will ignore you unless you try to interact with them;
They only trade for items that are not functionable.
Union Base 04
Consists of 93 people (accurate, 1 deceased);
The group consists of people from The Tourism Guide;
Had a great relationship with B.A.S until losing contact;