The following are known Game Genie Codes for Shadow of the Ninja on Nintendo Entertainment System (NES).

• Infinite Continues
  SZSNIIVG
• 9 Continues
  PEEVZAIE
• 1 Continue
  PEEVZAIA
• Don’t Lose Energy From Enemy Attacks
  GZVXSKSO
• Don’t Lose Energy From Falling
  AAVPGIGA
• Maximum Energy Gained From Potion
  APOEOGGA
• Less Energy Gained From Potion
  PAOEOGGA
• 40 Throwing Stars On Pick-Up
  AZUAOGGO
• 20 Bombs On Pick-Up
  GPKAVGIA
• Infinite Shurikens
  TAKLEEVI