Campaign
From Styleguide
campaign
A linked series of missions connected by a single objective or narrative plotline.
Many games link individual missions together with a larger story in a campaign mode. Do not refer to a mode as campaign mode unless the game explicitly calls it such.
Example: Although the combat in Rise of Nations: Rise of Legends remains enjoyable, the core fun of this game comes from completing the twisting and turning plotline presented by its engaging campaign mode.
