New Super Mario Bros. U Cheats

World 9 - Superstar Road
Get every star coin in Worlds 1-8 and beat the game

Fireworks at the end of the level
If you touch the flagpole and the last 2 digits match (11, 22, etc.), fireworks will appear. The number of fireworks depend on the last 2 digits. 11 is 1 firework, 22 is 2 fireworks and so forth.

Flagpole Secrets
Complete a level and if the last 2 digits of the timer match excluding 00, Fireworks will appear and Toad will also give you an Item. Below is the list of the items unlocked by their matching timer digits.
Item: Location
Fire Flower: Last 2 digits equaling 33 or 34
Ice Flower: Last 2 digits equaling 55
Star: Last 2 digits equaling 88 or 99
Super Accorn: Last 2 digits equaling 77
Super Mushroom: Last 2 digits equaling 11, 22, or 66