I watched a colleague's kid play a game on his iPhone. It was on airplane mode. But every so often a window would pop up trying to show an ad, and the kid would hand it to his dad, asking dad to "fix" it.

A pre-millennial computing experience would have the benefit of not having that sort of bullshit. For the patience-building experience it could be real floppies, but putting the games in an emulator is also an option. I guess Windows 11's "Install Copilot Edge OneDrive 365? [Yes/Maybe later]" popups means you'll have to go Linux...