The following are known Game Genie Codes for Metal Mech: Man & Machine on Nintendo Entertainment System (NES).

• Infinite Lives For Tony
  SZEYAVVK
• 1 Life And 1 Smart Bomb
  PEKSILLA
• 6 Lives And 6 Smart Bombs
  TEKSILLA
• 9 Lives And 9 Smart Bombs
  PEKSILLE
• Infinite Smart Bombs
  SZVYISVK
• Super-Jumping Tony
  VNNXTENN
• Super-Speeding Tony
  ZEEXGAIA
• Mega-Speeding Tony
  PEEXGAIA
• Start On Level 2
  AESSAUNY
• Start On Level 3
  PESSAUNY
• Start On Level 4
  ZESSAUNY
• Start On Level 5
  LESSAUNY
• Start On Level 6
  GESSAUNY