Iron Man / X-O Manowar in Heavy Metal is a video game published by Acclaim Entertainment and developed by Real Sports and Realtime Associates for the PlayStation, Sega Saturn, Game Boy, Game Gear, and DOS in 1996. It is a one or two-player side-scrolling arcade game in which the player battles various villains from Marvel Comics' Iron Man and Valiant Comics' X-O Manowar comic book series.