Classic NES Series: Super Mario Bros. Cheats - GBA
Primary Collection of Cheats
Fireworks
Hit the flagpole at the end of a level when the last digit of the timer is 1, 3, or 6.
Skip to World 5-1
When starting the game, hold [A] while selecting the mode at main menu.
Start from last world
After you get a "Game Over", hold [A] while selecting a mode at main menu.