The following are known Game Genie Codes for Zen Intergalactic Ninja on Nintendo Game Boy.

• 01A-3ED-F7E
  Instant staff power-up (Just hold down B)
• 015-91F-E66
  Start with only 1 life
• 055-91F-E66
  Start with 5 lives
• 0A5-91F-E66
  Start with 10 lives
• FA9-6DE-4C1
  Infinite lives
• FA1-B1A-4C1
  No energy loss against fire
• FAF-DAD-4C1
  No energy loss against hang-on enemies
• FA3-36B-4C1 + FA2-A4B-4C1
  Infinite energy aganst bullets and most enemies
• 051-668-C42
  Start lives with half energy
• 071-668-C42
  Start each life with 7 energy points