I haven't went around the backrooms fandom wiki's pages since I mainly reside within the discussions list. So yeah, the most unique level I've ever seen & read was that of level dreamworld, since it's bizarrely interesting, with a few unique things. Also, level dreamworld was made by me a while back.
So yeah, what's the mostly unique level you've ever seen & read as of now? Answer & Discuss :)
Also, here's a screenshot of an uncommon glitch within the posts at certain times. It can be dealt with by refreshing the page.
Enjoy :)