The following are known Game Genie Codes for Ikari Warriors III: The Rescue on Nintendo Entertainment System (NES).

• Start With 1 Life
  PEOKUALA
• Start With 6 Lives
  TEOKUALA
• Start With 9 Lives
  PEOKUALE
• 1 Life After Continue
  PEXKZLLA
• 6 Lives After Continue
  TEXKZLLA
• 9 Lives After Continue
  PEXKZLLE
• Infinite Lives
  AEUGNYPA
• 3-Way Firing, Instead Of Punching
  YESKVGPA
• Immune To Most Kicks And Punches
  GZSUOAST
• Always Throw Grenades Instead of Punches
  PESKVGPE
• Always Throw Explosive Barrels Instead of Punches
  ZESKVGPE
  Note: The barrels seem to do no damage to certain mid level bosses, you may have to kick them to death.
• Always Try To Throw Your Enemies Instead of Punch
  LESKVGPE
  Note: The throw does no damage to certain mid level bosses, you may have to kick them to death.