It started out just being Earth. But several months ago, we sort of got cut off from the outside world... and then once we COULD leave the city, it was different? Like, there are these other cities and regions that I don't think used to be there, and they don't seem to be connected to the rest of the United States at all. ...And then on top of that, we all got sucked into a weird digital version of the city that doesn't even connect to those regions anymore? And that's where we are now. So I really don't have any idea what planet we're on at the moment.