backrooms are open topic which means there is no real canon, but i was trying to make a backrooms game that was using the most original source, which is backrooms wikidot, so the level designs are based on wikidot version of the backrooms, although i could've added outlets and wooden things that are on the most walls of level 0, and better texture for walls in level 2
i will probably add more decorations in future versions of the game, thanks for leaving a review