"The Backrooms[1] is an internet urban legend originating from a creepypasta posted by an anonymous person to a 4chan thread in 2019.
The inner room is a mysterious place containing levels, entities, and objects. There is something called SAN (Sanity), which gradually decreases; those who lose SAN eventually become invalids and transform into entities. Various organizations have been established, and some people aspire to explore. Many live as wanderers, that is, lost people. As mentioned above, the most important goal among them is "You never know when you'll get lost, but even if you do get lost, explore with the determination to return alive."
Beware of the Entity and find the exit to escape the backrooms.
Supported version is 1.20.1.
Required mods↓
https://www.curseforge.com/minecraft/mc-mods/geckolib
https://www.curseforge.com/minecraft/mc-mods/structure-expansion
