The following are known Game Genie Codes for Final Fantasy Legend II on Nintendo Game Boy.

• 098-E28-086
  Start with 9 hit points
• 098-E68-E66
  Start with 9 defense points
• 098-E78-E66
  Start with 9 mana points
• 098-E58-F7E
  Start with 9 agility points
• 098-E48-F72
  Start with 9 strength points
• 09E-818-2A2
  Start with 9 swords (If your character is capable of starting with swords)
• 005-96F-08B + 005-9CF-08B
  All characters start with 15,163 hit points (The game shows only 999)