The following are known Game Genie Codes for Prophecy: The Viking Child on Nintendo Game Boy.

• 034-A0F-E6E
  Start with 4 lives
• 064-A0F-E6E
  Start with 7 lives
• 094-A0F-E6E
  Start with 10 lives
• FAE-04C-4C1
  Infinite lives
• FAD-F5C-4C1
  Infinite energy
• 00D-9BD-19B
  Each coin gives lots of money
• 194-A5F-667
  Start with 25 energy on your first life
• 324-A5F-667
  Start with 50 energy on your first life