This is the entire project file/map from my backrooms animation. It contains all the meshes/materials/etc. used, and it also includes the VHS horror style compositing. The map can be very heavy to run, so please make sure that you have a strong-enough GPU if you are planning to use Cycles. That being said; this map can be baked and exported to games, and it could also be used with Eevee with some tweaking.