If you have played the campaign then you know what I'm referring to. What surprised me was that the SOM works for user created mission also. It dynamically creates mission and objectives and enemies depending on where you are on the map. To use it simply place it on the map and synchronize it to the player's squad. Simple yet tremendously fun

To create a civilian population, place a Location Module of your choice (City, Camp etc) in a town, then place a Civilian Ambient Module in the same town, synchronize the two GameLogic's, and voila; civilians will be created dynamically from houses in the area. They will even take jogs and talk to each other!