With the exception of a few (regrettable) "game key" cards, physical Switch 1/2 games are usually playable offline with just the game card and the console.
This is part of the appeal of Nintendo consoles - you don't need to connect them to the internet, and they are still terrific for local multiplayer.
This is part of the appeal of Nintendo consoles - you don't need to connect them to the internet, and they are still terrific for local multiplayer.