The Aliverooms looks like the Backrooms, yellow walls, ceiling, and floor, except that it’s all held together by a singular entity, the Aliverooms itself. The black vines are fully controlled by the Aliverooms, They hold together everything. The holes are where the hearts are located, the living sources of the Aliverooms. The Aliverooms can move itself, making it easy to become lost. When angered, it drags living things into the space outside the rooms and does who-knows-what to them.