>>58363050
I subscribe to the theory that PMD world is an offshoot pocket-dimension sort of derivation from the regular world with humans and pokemon. It's probably protected in some manner that doesn't allow human access normally, but only when they are "called" and transformed from their human bodies.

When time and space shat the bed in Explorers future it might have lifted that prohibition hence why the protag could traverse into the world in human self.

If you're gonna ask about modern places like RT power plant friend area... uhhhh... In Gates' introduction Quagsire was talking about Mystery Dungeons "spreading". Maybe areas from the normal world get projected in a mysterious way like the dungeons do? I don't know.

But when it comes to Gengar and Explorers I felt like this gave an accurate picture.