The following are known GameShark Codes for Iron Man / X-O Manowar in Heavy Metal on Sony Playstation (PS1).

These codes were also known as Action Replay Codes outside the U.S. and later in the U.S. and are compatible with both devices.

Iron Man Codes
• Infinite Boost
  8001D66C 0000
  8001D66E 0000
• Once Hit Become Invincible (Flashes)
  8001D770 0000
  8001D772 0000
• Can’t Float
  80092076 0100
• Infinite Armor
  800920A8 001E
• Infinite Lives (Both Players)
  8001D990 0000
  8001D992 0000

X-O Manowar Codes

• Infinite Boost
  8002583C 0000
  8002583E 0000
• Once Hit Become Invincible (Flashes)
  8002593C 0000
  8002593E 0000
• Can’t Float
  800922F2 0100
• Infinite Armor
  80092324 0023