The following are known Game Genie Codes for Castle of Illusion Starring Mickey Mouse on SEGA Genesis.

• Master Code – Must Be On
  EABT-AA3E
• Each Item Worth 5 Items
  SAGA-BYWR
• Maximum Item Capacity Becomes 98
  NNGA-AACJ
  NRRA-AABJ
• Infinite Items
  SC6A-AY0L
• Keep Items Between Levels
  SCYT-RYVN
• Infinite Tries, Lose Tries If You Fall
  SCKT-AYTA
• Infinite Tries, Don’t Lose Tries If You Fall
  SC8T-AYXR
• Invincibility
  SCKA-AY1Y
• Jump Higher
  E5EA-AAGE
• 1 Hit And You Have Invincibility
  WG5T-AAZC
• Do Not Blink When Hit
  WG5T-AAZW
• Turbo Mode
  CCLT-AAGE
  Note: This code can be glitchy sometimes.
• Skip to the Bosses
  SCKA-ATDE
• Almost Invinvible (Avoid Apples, Water, And Black Rocks)
  FCKA-AWHJ
• Lose Health And Lives But You Will Not Die
  7CKA-ATS2