The whole network traces back here — a gas station at 2:47 AM, a napkin, and the people nobody was watching. Memphis runs in four movements: the Threshold (the rooms it was built in), the Disaster (the October it was tested), the Rebuild, and what comes Next. Walk any door.
Not every Memphis room is set up like this — some regions are just what they are. This is the one where it started, so it gets the full map. New rooms slot in as cards; the front door never has to change.