CheatCodes.com has all the official New Super Mario Bros. U Wii U cheats to unlock everything. If you know of any that we don't have, please let us know.
All published and official codes as of Friday May 24, 2013 for New Super Mario Bros. U are shown below.
Complete a level and jump on the flagpole with the timing to get:
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
There's an easy trick that works on every boss except Bowser, Bowser Jr., Kamek, and Giant Sumo Bro. When you're first in the room and after you first attack them, wait for them to come out of their shell then right when they do, if you're quick enough, attack them again before they even get the chance to strike back. Do the same thing one more time, and you'll have defeated a boss quickly.
The lurching urchin challenge can be unlocked if you complete enough time trial challenges. Once unlocked, play and die twice before 7. 75 seconds is up, play normally and before half way, up a water blast is a rope. Climb this for quick finish and a red star quick bonus!
If you earn all 5 stars on your profile you can visit Toad Houses repeatedly without them becoming inactive And previously inactive Toad Houses will become accessible again!
After you complete the game the first time, and you have unlocked Superstar Road, you can get the Propeller Hat and Penguin Suit power-ups (you know, the ones from New Super Mario Bros. Wii). They are made available from the Toad Houses located there. Once you get them, they can be used in any level in the game.
Found some tricks that we don't have? Got some helpful hints, tips, or tactics we don't know about? Tell us and you could win a free Nintendo Wii U game (or any other game you want for any video game system)!