The following are known Game Genie Codes for Swords and Serpents on Nintendo Entertainment System (NES).

• VANGKTVE
  All characters have Scale Armor
• UEEKSTOE
  Warriors start with a Great Sword
• KEEKSTOE
  Warriors start with a Great Axe
• SEEGETSE
  Magicians start with a Wizard’s Wand
• YPKGSTLE
  Magicians start with more spells
• LAKKXTAA
  Magicians have greater spells
• GZKYLGOY
  Spells use up no magic points
• XEOGVTXE
  Thieves start with a Long Sword
• KEOGVTXA
  Thieves start with an Axe
• TPXGNVZE + TPXKSVZE
  Start with 30 health points each
• ZLXGNVZA + ZLXKSVZA
  Start with 50 health points each