What about a rousing game of Attack and Defend?
Let me explain.
This needs 2 mods, so I'm not sure if its entirely feasible.
First, you decide whether you want to attack or defend by going to the mod and following
the one that will teleport you to your area.
Second, once you have decided what you want to do, you will be given weapons and armour by either raiders or caravan drivers.
After that, the game is simple: As defender, you must wipe out all raiders. As attacker, destroy the caravans and kill all guards.
The difference in difficulty between the two is because I think people will want to play as raiders, not as guards.