Iron Man X-O Manowar in Heavy Metal is a 2D action platformer released in 1996 for the Sega Saturn. It's based on a crossover comic by Marvel and Valiant and features two iconic superheroes, Iron Man and X-O Manowar, teaming up to stop villains from both their universes. Each character has unique abilities, and players can choose between them to navigate through levels that combine shooting and melee combat. The game is part of the side-scrolling genre and features a unique storyline that was original to the title.