The new game "Homefront" that comes out next week has a very interesting premise.
The plot is that N. and S. Korea reunite under communist rule. The U.S. economy collapses and things turn towards anarchy. The new People's Republic of Korea Army invades and takes over. The player is part of a guerilla faction, kinda like in "Red Dawn". They even give a timeline leading up to the story. It supposedly occurs in 2027.
Go to Wikipedia and type in "Homefront video game" and check out the timeline. It's thought provoking.
Looks fun, can't wait til it comes out.
I wish I had time to play. I can't even make time for an online COD game. :(