MySim mode enables players to create user-defined Sims, who will live and work in the city the player has created. When moving a Sim into a city, the player can choose from a selection of characters or import others from "The Sims". Sims can be killed by certain disasters or catastrophic events, leave the city if conditions are unfavorable, or die of old age. After they die, their "child" sometimes takes over for them by taking their name, house, and job.