The following are known Game Genie Codes for Darkman on Nintendo Game Boy.

• 63F-91C-91A
  Start first life with mega Energy
• 0AF-91C-91A
  Start first life with half Energy
• 636-40D-91A
  Start the rest of lives with mega Energy
• 002-4DF-E66
  Start with 1 Life
• 072-4DF-E66
  Start with 8 Lives
• 014-DDF-E69
  Infinite Lives
• 005-97F-E6E
  Infinite Time
• 909-ACA-E6B
  Start with 9 minutes
• BA5-0FF-081
  Infinite Energy