BloodRayne: Betrayal is a 2D side-scrolling action game that follows the story of BloodRayne, a half-vampire warrior. In this game, BloodRayne is joined by a new ally to fight against an evil group of vampires who are plotting something sinister. The player will take control of both characters and use their special abilities in order to defeat enemies and progress through levels. Players must also solve puzzles and make strategic decisions as they battle their way towards victory.