http://tvtropes.org/pmwiki/pmwiki.php/WebOriginal/TheBackrooms

The Backrooms is an internet meme and quasi- Alternate Reality Game based upon the eponymous Eldritch Location , an infinite series of rooms decorated in mono-yellow wallpaper and moist carpet, lit by fluorescent lights, supposedly accessed when one noclips out of reality. Currently, a KnowYourMeme article exists documenting the phenomenon and a subreddit and wiki have been made to expand upon the lore.

The Backrooms contain examples of: