Just found an old archive link to /x/… looks like someone started a "Backrooms" thread back in 2012?
> A place beyond reality... endless yellow rooms.The Backrooms

Hidden /x/ Thread Discovered
ID: abc123de
No.987654321
Anon
ID: abc123de
OP
ID: xyz789gh
This is my project. Documenting levels, escape routes, entities spawning from glitches. It’s growing fast.
Anonymous
ID: zxcv456f
Yo, stumbled onto this by accident… Is there any way to access these levels IRL?
Guest
ID: lmno234r
They say you need to “noclip” through reality—think boundary glitches in walls. Crazy shit.