There’s a lot of support for NFC launchers too. Stuff like Zaparoo, and websites to make custom labels for them.

It’s not the same idea but it’s the same “take a thing off a shelf and use to to play a game” sort of vibe if that’s what you’re after. And it would be a lot cheaper, SD cards have skyrocketed lately.

Yes.

“Unless the game itselfhas DRM” is the key phrase. Steam itself is a form of DRM if you must install it and login to install and/or run a game.

DRM-free Steam games are the exception, not the rule, unfortunately.

https://www.pcgamingwiki.com/wiki/The_big_list_of_DRM-free_games_on_Steam