Although the Megacity extends many many miles, every city has outskirts. From any point in MegaCity you can eventually see the end of the city and beyond (that's why the mountains are there, to simulate the surroundings of MegaCity, eventually the Merv built a Mansion there for various reasons, like inaccesibility from bluepills and thus inaccessibility from Agents). However, whatever is beyond the city is kind of like "The Truman show". Any bluepills claiming to be grown up in another country and immigrated into MegaCity is actually a lie composed by the Machines. Commuters from other "towns", transports, flights to and from, is all manipulated to simulate a closed space. If a buepill goes on a trip to another country, his memory is manipulated to make him think he has done that. It's the same (as we also know from an LE) as birthdates or any other kind of dates. Although the amount of data that has to be manipulated is staggering, it is, however, not an impossibility considering that the Machines can simulate a "perfect" reality.
Eventually some bluepills find out that dates are manipulated (something along the lines of "I thought I did that in that year and not that") or that a trip to another country is more like a dream than what really happened. Although there hasn't been any RP that is based on that, it is however a plausible cause for rejecting the reality of the Matrix.
PS10N wrote:For the sake of our little game universe, the Megacity is the Matrix and we can go to four Districts there. Period. For the sake of Fanfic, Player Events and RP, mention the world.
The game restrictions come as real as they come. However, from what I said we can assume that leaving the city actually does not really happen, to bluepills anyways. In RP you could say you left the city, however, we have no idea how the outskirts and outer suburbs and stuff of MegaCity look like. Credibility of such stories come rather low or they're rather high, because we don't actually know. The same goes for RW RP with hovercrafts, Zion, New Zion, 01, the fields, etc. Whatever story we base on assumptions, credibility of stories can only come from within the game-world Megacity. And those stories credibility is depending on how those are RP'd inside of known boundaries.
Well, that's what I think, anyways.