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

• Start With 6 Lives
  TEXUNLZA
• Start With 9 Lives
  PEXUNLZE
• Infinite Lives
  AASOYYPA
• Start With Extra Weapons
  NNNLOLAE
• Slower Timer
  AVKYPSGL
• Faster Timer
  AXKYPSGL
• Permanent Fireball
  AESTKXGA
• Permanent Shield
  AESXXNGY
• Invincible
  SZNTGTSA
  SZOUIYSA
• Infinite Time
  SXKNAIVG