1. When you play the game and you reach an airship level (perferred to be called Bowser's castle) and you lose the first time, the airship will fly somewhere in the world. When you go to the castle nothing wIll happen.
2. To get to Boom-boom directly by entering the third door then repeatedly tapping up on the control stick.
For the second code I got it from the Nintendo power magazine so trust the publisher.
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