The following are known Game Genie Codes for Castlevania: The New Generation on SEGA Genesis.

• Region Bypass Code
  A2CT-AA44
  Note: This code is required in order to play this on a US or Japanese Genesis console.
• Infinite HP
  REST-C6XY
• Infinite Lives
  AA0A-DA48
• Infinite Gems
  RG5T-C6ZG
• Infinite Continues
  AXJA-AA56
• High Jump
  AA9T-CYRR
• Super High Jump
  AA9T-D2GR