G:Super Mario USA (Japanese)

C:Infinite Lives|04ED:63|Rune|
C:Infinite Health|04C2:1F|Rune|
C:Invincible|04E0 7F|Viper187| 
C:Infinite Coins|062B:??|Viper187
C:Level Modifier|0531:XX|Rune|
C:Room In Level Modifier|0532:XX|Rune|
C:Mario In Princess Toadstool's Dress|06F9:04|Rune|Turn this code on and choose Princess Toadstool at the character select screen. Jump once you're in-game. You can get other amusing codes by choosing different characters and/or modifying the quantity digits (0-3).