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

• Start With 9 Lives
  PAXVTYLE
• Start With 25 Lives
  PPXVTYLE
• Infinite Lives
  SXUYTLVG
• Once You Get a Horse, It Cannot Die
  SZEGOLVG
  Note: You have to get a horse on each stage.
• Invincible
  GVVKKZKA
• Start With All Weapons And Lots of Ammo
  PAUTTYAA
• Start With All Weapons, Lots of Ammo, All 4 Boots, And All 4 Rifle Icons
  GAUTTYAA
• Don’t Lose Any Weapons When You Die
  PEXNALAA