Wing Commander: Prophecy is the fifth installment in the Wing Commander science fiction space combat simulator. The game features a new game engine (the VISION Engine), new spacecraft, characters and story elements. The events depicted in Prophecy are set over a decade after Wing Commander IV: The Price of Freedom and, rather than the Kilrathi, the player must deal with a new alien threat, an insectoid race codenamed Nephilim that has invaded the human galaxy through a wormhole. (wikipedia.org).