The following are known Game Genie Codes for Ys III: Wanderers from Ys on Super Nintendo (SNES).

• Protection From Most Enemies
  C2B3-D092
• Start With 488 Gold Instead Of 1,000
  DF8E-00BE
• Start With 2,024 Gold
  D58E-00BE
• Start With 9,704 Gold
  498E-00BE
• Start With 20,200 Gold
  038E-00BE
• Start With 40,168 Gold
  BA8E-00BE
• Start With 65,512 Gold
  EE8E-00BE
• Gain Experience Quicker
  CBBB-A192
• Gain Experience Much Quicker
  CBBB-A192
  79BB-A1B2
• Start With 100 Hit Points Instead Of 20
  1082-012E
• Start With 200 Hit Points
  A682-012E
• Items Are Free If You Have Enough Money
  6DEB-D46F
  DCEB-D4AF
• Start With 255 Hit Point, Start Of Game Only
  EE82-012E
• Get 250 Experience From Each Enemy
  CBBB-A192
  EEBB-A5B2
• Get 26 Experience From Each Enemy, And They Don’t Die
  CBBB-A192
  EEBB-A0B2
• Kill An Enemy To Level Up
  DDC5-0D07
  DDC5-04A7
• Kill An Enemy For Maximum Gold
  DDBA-A922
• View ‘Equipment’ To Get All Of It
  DF38-D4AD
  B238-D7DD
  CD38-D70D
  F438-D76D
  Note: You will still need to collect some equipment to complete certain quests.