The Union States of Americo

[Christoffer Lernö]

I don't think it's impossible to do. Don't aim for completeness. My suggestion is: leave the enigma open, leave lots of places open for GM creation, put some local weirdness for inspiration but leave most of america open for exploration by the game group. So if they want to make a special monster or weirdness somewhere they can. Cut down on the detail. For example Area 51 only needs to be mentioned in a few paragraphs. Less detail, but make the comments very suggestive so that the group wants to go there and explore it.

[RPunkG]

So what would be the main area of focus then?  A particular city or group of cities?

[Christoffer Lernö]

I'd say that you'd provide one or two "example cities" so that people knows how they are supposed to look like, then GM's could create their own cities from those examples. (And should be encouraged to do so)