There are two schools of thought about how to handle the single-player component of an RTS. Some developers believe the campaign should be a sort of training ground for multiplayer, while others believe that single-player is a completely separate story-based experience. The original Command & Conquer games practically originated the latter school of thought with campaigns that were as much "interactive movies" (to use a dubious and now discredited term) as they were strategic challenges. Command & Conquer 3, the latest edition in the series, is in many ways a throwback to an older form of RTS gameplay, not least in the way it structured its campaign like older games in the series. Kane's Wrath, the new expansion pack for C&C3, also follows this model and actually goes it one better, creating a sort of "fan fiction" storyline that fills in plot holes in earlier campaigns.