Thread:Mesektet/@comment-27729149-20151002041329/@comment-3581997-20151113175748

That's mostly correct. However If the people in said city can't get out then it is considered a crap-sack world. See one society is a bad place and the residence can't leave then they are trapped in it and that society effectively becomes their world. In those sorts of cases the show, game, book, play etc. is definitive the center of a character's world even if that world is not specifically the Globe.

Final Fantasy VII: No

Midgard isn't telling people they need to stay there, it's just most convenient for those who want things like power or modern comforts.

City of Heroes: Yes

Praetoria on the other hand may only be 3 city islands but they lock their populous inside. Supposedly it's "For their own safety", but truth is even if not for the monsters outside Tyrant would still aim to make himself the center of his people's world.

The Purge: No

We have no idea what the rest of the world is like outside the US in The Purge for instance nor is anyone making putting up boarders locking the civilians in during crime is legal night.

So as with most things when assigning categories and tropes it is all about the story's context.