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

• 015-9CF-E66
  Start with 1 life
• 065-9CF-E66
  Start with 6 lives
• 003-A8F-E69
  Infinite lives
• 4C5-A1F-D54
  Start with 50% surge power
• 245-A6F-C4B
  Start with 50% energy
• 00A-85F-E6D
  You have infinite energy except against exploding bombs
• 00D-B6C-3BE
  Infinite time (Switch off at the end of each stage to go to the next stage,)