Super Mario Bros.

• 6D0F-FAAD - File A starts with 129 lives.
• EE2F-6DAE - Starman lets you be invincible for about 225 seconds.
• 17DF-F20D - Start on World *1-1 (harder version of 1-1).
• 17DF-F26D - Changes Game A to a two player game.

Super Mario Bros.: The Lost Levels

• 6DDF-FEDD - File A starts with 129 lives.

Super Mario Bros. 3

• DD3E-6C49 - Start with over 99 lives.
• DF3E-6C49 - 1 coin gives you over 99 lives.
• DF3E-6819 - After getting 100 coins, each coin gives you a life.
• __A8-6CAA - After dying once you are invincible, and you keep what you have.
  • D6 - Flying Mario
  • 30 - Raccoon Mario
  • E1 - Tanooki Mario
  • 35 - Hammer Mario
  • 32 - Pink Flyer
  • 3A - Airplane Mario
  • 33 - Blue Mario
• __A8-6CAA
  • E9 - Frog Mario
  • E7 - Fiery Mario (If you get hit by an enemy, the game kind of pauses or something)
  • E4 - Invincibility (You have a Big Mario, if you Get hit by an enemy, you just get big again)
  • EB - Flag fish Mario
  • 53 - Enemy goes through Mario/Luigi
  • DF - If you get a Mushroom, you are still small
  • CE - If you get a Mushroom, you can't move, but you can jump
  • AB - Glitched swimming P-Wing Mario (game freezes in water)
  • 89 - Frog (always get star card at the end of stage)
  • 3E - Glitch boot Mario (cannot move left or right)
  • D5 or 25 - Hammer Mario
  • 88 or D8 - Glitched pink and swimming