Ingredients Glass + Committee + Emotion
Time Constraint: Two sessions of six hours each, separated by two weeks
Very sketchy right now. The primary concept is that players play out a vicious conflict with two pretty defined sides motivated by strong emotions: North vs South, Sunni vs Shi'ite, the Mountain vs the Girondins. In the first session, you play one side; in the second session, you play the other side, allowing you to comment on the events of the first session. The scheme should allow the players to really get into the reasons -- often pretty rational -- behind both side's actions. The only problem I see, though, is that there is no allowance for any kind of resolution of the conflict, which is a pretty bleak outlook in general.
Does that float anybody's boat? I feel like I've got half of a concept.