To start with all the extra mountains, boards, and the hidden character, input the following code at the "start" screen (where you can select start, lesson, or option): Analog Stick Down, Analog Stick Up, D-pad Down, D-pad Up, C-Down, C-Up, L, R, Z, D-pad Left, C-right, Analog Stick Up, B, D-pad Right, C-Left, and last press Start. If done correctly you'll hear a kid saying "Yeah!"
First you must earn gold cups on tracks 1 to 8. After you opened up Silver Mountain, come in first to get a gold cup and you will be treated to an ending sequence with all the characters. Track 9, Ninja Land, will now be open.
To perform a trick with blue stars instead of golden stars, do this trick off a jump. Hold A, tap the control left first then right and release A at the jump. This will make your character do a 720 grab.
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