Quick Scoop

The Backrooms were not invented by one single person in the usual sense; they emerged as an internet creepypasta from an anonymous 4chan post in 2019. The concept was then expanded by many creators across the web.

Origin

A widely cited origin story says an anonymous user on 4chan’s /x/ board posted a disquieting office photo and asked others to share images that felt “off.” That thread sparked the Backrooms idea and the lore grew from the replies.

Who made it

Because the original post was anonymous, there is no confirmed single inventor. The best answer is that the Backrooms were created collectively by internet users, starting with that 2019 thread.

Extra context

Later reporting traced the famous image to an earlier real-world photo source, but the horror-myth version of the Backrooms still began as a community-built story online.

Bottom line: no one person “invented” the Backrooms; an anonymous 4chan post in 2019 kicked off the idea, and the internet built the rest.[1][5]