Expert Mode
To access Expert Mode, complete Story Mode successfully.

Head Start
When Mr. Dog says "GO" at the start of a race, hit the B button and you will get a rocket start.

Special Boards
First, to get the Special Boards, you need to have activated Expert Mode. Then, race on the track in Expert Mode.
Poverty Board -- Beat Sunny Mountain to get the Poverty Board. While using this board you will lose money.
Feather Board -- Beat Turtle Island to get the Feather Board. When you jump, it will have the same effect as is you were using wings.
Ice Board -- Beat the Snowman Boss to get the Ice Board. This board is slippery and hard to control.
Star Board -- Beat Wendy's House to get the Star Board. This board is a great all-around board.
Rich Board -- Beat Linda's Castle to get the Rich Board. You will gain about 5 coins a second while using the Rich Board.
Dragon Board -- Beat the Dinosaur Boss to get the Dragon Board. This board comes permanently equipped with Rockets and Wings.
Ninja Board -- Beat Starlight Highway to get the Ninja Board. You will always be invisible while using this board.
Charm Board -- Beat Haunted House to get the Charm Board. You can't be ghosted while using it.
High-Tech Board -- Beat Mecha-Damien to get the High-Tech Board. This board comes equipped with the Speed Fan.

Play as Damien
To play as Damien, win the entire game in Story Mode.
All Characters, Boards and Levels
Straight from the developers comes the code you've all been waiting for. At the Title screen press Z, B, C-Up, Down on the d-pad, Left on the stick, Right on the stick, Up on the D-Pad, R, Z, A.
NOTE: You must start a new game after entering this code. It will not work with saved games.

Play as Coach
To play as the coach, beat him in training mode. He's good at tricks.

Play as Mr. Dog
To play as Mr. Dog go to the Shot Cross and get a perfect score without missing one mailbox.

Play as Mr. Penguin
To play as Mr. Penguin, beat him during the training session!

More Points in Trick Mode
To get more points in Trick mode, perform a variety of stunts! Variation triples the number of points awarded for each trick.