Sojourn is a single player game about time travel. Throughout the course of the game, the player travels from destination to destination, opening up destination portals to different places in time while trying to retrieve time sphere fragments in order to build a machine that will allow them to go home. The player does have more than random chance on their side, however, as they can choose to play timestream cards that allow them to manipulate the flow of time.

—description from the publisher