 After a few minutes the world is populated and its history develops for the amount of in-game years selected in the history parameter. Civilizations, races and religions spread and wars occur, with the "population" and "deaths" counters increasing. The ticker stops at the designated "years" value, at which point the world can be saved for use in any game mode. Should the player choose to retire a fortress or gets defeated, this world will persist and will become available for further games.
