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

• Infinite Magic
  ZASEGOUI
• Don’t Take Any Hits
  TGNILGSA
• Start With All Items
  XZKYILKP
  AVUOXSOZ
• Start At Experience Level 5
  GEKISVZA
  PNKINTSL
• Start At Experience Level 10
  PEKISVZE
  PNKINTSL
• Start At Experience Level 15
  TEKISVZE
  PNKINTSL
• Start With 254 Agility
  VNKISVZE
• Start On Level 16
  YEKISUZE
  PNKINTSL
• Take No Damage and Have Infinite Magic
  OLSNPKOO
  Note: The only problem with this code is you cannot easily die to get the password to continue your game at a later time. A killing hit will still kill you.