Ironman X-O Manowar in Heavy Metal, a game based on the Marvel Comics characters, brought fast-paced action to the Game Boy. As a licensed title, it likely aimed to capture the essence of the characters and their world within the limitations of the handheld system.  Details on gameplay, though scarce, suggest a side-scrolling action game with likely combat elements featuring both Iron Man and X-O Manowar. The exact development team behind the game is not readily available, but the game is known for a unique mix of action and comic book flavor.

Ironman X-O Manowar in Heavy Metal (USA, Europe)

Initial D Gaiden (Japan)