Run8 is a sandbox simulator platform. There are no preset missions, no storyline to follow. Users are welcome to move freight around the map, all freight cars have a destination Some destinations are on the map such as small industry sidings, some are larger such as intermodal unloading facilitates and yet other freight cars will be destined for "off route" destinations. Local deliveries are always handled by a user, long haul trains may be driven by the user or by "AI" - The simulator works the same in Single User as it does in MultiUser. There are many MultiUser communities that leave servers running 24/7 for a nice drop-in online experience with no waiting.