The following are known Game Genie Codes for Mario’s Time Machine on Super Nintendo (SNES).

• Bonus Timer Doesn’t Count Down In The Whole Game
  DD6A-1405
• Don’t Lose Mushrooms In Collisions
  CB64-3FA9
  DD64-34D7
  DD64-3409
• 1 Wrong Answer To Questions Allowed
  DF24-1704
• 255 Wrong Answers Allowed (Ignore Sad Face Icon)
  EE24-1704