The following are known Game Genie Codes for Mega Man X3 on Super Nintendo (SNES).

• Infinite Health
  C2AD-6FF7
• Messy Menu (Doesn’t Seem To Affect Gameplay)
  EE2A-070D
• Level 1 Shots Fired To The Right Start To Go LEFT, Then Do A U-Turn To The Right
  EE63-D4A1
• After Firing For A While, Level 1-3 Shots Are Disabled
  EE62-D4A1
• Sparkles Behind Level 3-5 Shots Fly In A Straight Line
  EE6F-D4A1
• Sparkles After Level 3-5, Shots Have Pretty “Shimmering” Effect
  EE60-DF01
• Large Life Balls Instantly Fill An Entire Subtank
  EE29-D7D1
  Note: Large Life Balls instantly fill an entire Subtank, although the Small Life Balls do not add anything. If you fill two or more in this way you actually get a bonus Subtank.
• Super Jump
  D586-6F26
• Mega Jump
  DB86-6F26
• Ultra Mega Jump
  D886-6F26
• Infinite Special Weapons (Once You Have Them)
  82CB-0D2F
  Note: This only works if you don’t power-up the special weapons.
• Infinite Special Weapons (Once You Have Them)
  82CB-0D2F
  82CA-0F2F
  Note: This works even if you power-up the special weapons.
• Auto Pick-up On Life Energy Pods
  AC2D-D701
• Skip Boss At Start Of Game And Proceed To Stage Select
  B933-DF6C
• Start With Max Health Bar
  F02A-ADF4
• Big Energy Pellets Fill Your Energy Bar To Full After Pick-Up
  F02F-6469
• Small Energy Pellets Fill Your Energy Bar To Full After Pick-Up
  F028-D7A1
• Makes Your Normal Weapon Much More Powerful
  6DA0-ADF7
• Get All Equipment when you Enter the Start Menu
  CBA6-0DD7
  EEA6-0D07
  62A6-0D67
  Note: Enter the Start Menu and you will get all the equipment. The display will be buggy, but this can be fixed by turning off the codes afterwards and going into the Start Menu again.
• Get All Robot Rider Parts/Gold Megaman When You Enter The Start Menu
  CBA6-0DD7
  EEA6-0D07
  62A6-0D67
  25A6-0DA7
  Note: Enter the Start Menu, and you will get all the parts. The display will be buggy, but this can be fixed by turning off the codes afterwards and going into the Start Menu again.
• Get Zero Saber When You Enter The Start Menu
  CBA6-0DD7
  6DA6-0D07
  62A6-0D67
  84A6-0DA7
  Note: Get all equipment, and all Robot Rider Parts, then use this code to get the Zero Sword. Use of the Zero Sword can be glitchy in places.