Quote Originally Posted by Pandamonium View Post
Man, when these guys hit a wall hard enough (mess with the wrong people) they are in for a decline.
I mean, what happens when the thirders can't settle anywhere else :)?
Apocalyptic civil war mostly

Luckily they live on a river expanse attached to a very large semi-arid grassland, so they have a long time before they reach the limits of their expansion. The issue of whether they will become technologically obsolete before they finish that area is very much in question.

I'm still working on how this can be used in a game, I was just struck by the desire to create a society that is designed by their crop package to perpetually overrun themselves.