Normal Folks Adapting
I'd like to see a game that's about normal run-of-the-mill 21st century folks from the real world thrown into a fantasy world trying to adapt to their new circumstances. And I don't mean "okay now pick a class and start hitting dungeons", I mean a game that focuses on the slow process of adaptation... learning new languages and customs, integrating, making new friends, making a life.
Making the choice to either cling to the values of a 21st century Earth that no longer exists, or to try and "go native" and adopt the worldview and attitudes of a new and very different culture.
I mean raiding dungeons and killing dragons (or whatever the setting's default adventure implication is) can certainly be a part, but playing out a realistically slow transition to a new and different reality should be a part of it.
It absolutely doesn't have to be heroic fantasy either; some kind of sci fi setting or time travel or whatever works as long as the players have to adapt and change to a new context. Ideally not a well known property (Forgotten Realms, Fall Out, Star Wars) so the players don't have that frame of reference, either.
Preferred system:
Top Tier: Fate. Accelerated or Core. The way Aspects shift over time works well for this, I think, as does the focus on who the characters are.
Mid Tier: GURPS, Champions, other crunch heavy simulationist systems. I don't really like crunch heavy.
Bottom Tier: DnD 5e, 0e, Shadow of the Demon Lord, Dungeon World or other PbtA games assume a good deal of competency at 1st level in your chosen class, so you'd have to significantly work against the system with some kind of 0-level cludge until the PCs have adapted. I mean, they'd work, but why go with a system you have to struggle against?
Anyway that's what I'm after, thanks.