The following are known Game Genie Codes for Castelian on Nintendo Entertainment System (NES).

• Start With 1 Life
  PEVGYPLA
• Start With 6 Lives
  TEVGYPLA
• Start With 9 Lives
  PEVGYPLE
• Infinite Lives
  SLOKZLVI
• 5 Continues
  IAOGTZZA
• 8 Continues
  AAOGTZZE
• Infinite Time
  SZNXYAVG