Roller Coaster Tycoon 2 Can easily spend hours creating a park or that one coaster.
Tetris An easy pick up and play game but could also last a long time if you’re good.
Links Awakening (Switch Version) This has always been my favourite Zelda game and I’ve played the switch version at least once a year.
I’ve always read hardware to mean the console itself and software to mean the games when it comes to consoles. So I would expect the games to be playable whether they are digital or physical games. I’ve seen nothing to suggest Nintendo want to go the digital only route anytime soon.