The following are known Game Genie Codes for Bubble Bobble Part 2 on Nintendo Game Boy.

• AFE-33A-19E
  Kill 1 enemy to go to the next level
• FAB-CEE-4C1
  Infinite hearts
• 3E8-39F-081 + 138-3AF-D5E + 008-3BF-E6D
  Start on round 20
• 3E8-39F-081 + 278-3AF-D5E + 008-3BF-E6D
  Start on round 40
• 3E8-39F-081 + 3B8-3AF-D5E + 008-3BF-E6D
  Start on round 60
• 015-5CE-E66
  Start with 1 heart
• 065-5CE-E66
  Start with 6 hearts
• 095-5CE-E66
  Start with 9 hearts
• C97-8AE-E66
  No big bubbles appear
• FA5-58E-4C1 + FAB-46E-4C1 + FAB-63E-4C1
  Run into 1 enemy and you will remain invincible for the rest of the game