NRaas StoryProgression changes that, by adding a sim-level touch to the system. The system doesn't care what the sim wants, only what the town as a whole requires. It says, if your town has this size of population, then this many should leave town, this many should die, this many should get married, this many should have children, this many should be vampires, etc.Īnd how does it choose these sims? Essentially at random. EA's version of Story Progression is based on demographic statistics.