Level -4, Enter The Backrooms Wiki

Level -4 is the 5th negative level of Enter The Backrooms. Level -4 is an infinite forest with trees entirely made of TV static. Above that, you can see a near-resembling mirror of the level above you. This mirror is inverted, so expect it to invert your control. Level -4 is mostly safe as only Corruptors and Menders appear. However, Corruptors are far more common at this level. Upon entering the level, you will hear a static sound produced by the trees while hearing a loud, radio-frequency whoo

There is a critique in the main Backrooms Community about how Kane didn't stick to the original idea because he used entities (same community that has too many levels and entities) but

How To Survive LEVEL 606 Of The Backrooms

Steam Workshop::(The Backrooms) Level Fun =)

Have I been here before? : r/backrooms

Level 19.1: Room Service!, Backrooms Wiki

The Backrooms Experience Juan Diego's Research Space

The Backrooms Experience Juan Diego's Research Space

Create The Backrooms in Blender Tutorial - Digital Art Hub

Against The Backrooms on Steam