Is there an $80 Pokémon game where walking outside is a core mechanic and that facilitates interaction with a huge network of users?

A long time ago they had the games that came with a "Pokéwalker", which was a pedometer that acted as a sort of mini-game, but that's the closest they got to a mainstream game where you have to get off the couch. It almost meets your specification (well, did, I'm sure the internet part is offline so you're not connected anymore), but it's obviously not exactly what you meant.

Take a walk while you play your switch