One of the things I really miss from that era was the game manual. Since they couldn't put all of the backstory and tutorial stuff into the game itself, you'd get a companion booklet to read (e.g. this one for The Legend of Zelda). Some games took that too far and you essentially had to buy a separate guide. A lot of people think games from the era were obtuse, but they're really just missing the documentation.

I honestly really liked that experience and would read the guides when I wasn't able to play.

Arcades obviously didn't have that luxury, so they had to be games you could quickly pick up without any introduction. So you got a natural divide between games for home and games for arcades (with some overlap of course).

And yeah, the gaming experience varied quite a bit by platform for the same game because things like audio and graphics drivers needed to be built into the game itself, and that varied by system. But that's also part of the charm. There wasn't really an expectation that a game would look the same on two platforms, so they were often judged separately (i.e. arguments about which version is better).