Unlock Mallora Board: Press X(2), Right, Circle(2), Down, Triangle(2), Left, Square(2), Up. Select Elise and start a course and she will have the Mallora Board and a blue outfit.
Unlock Mix Master Mike: Press X(2), Right, X(2), Down, X(2), Left, X(2), Up. Select any boarder at the 'Character' selection screen and they will be replaced by Mix Master Mike on the course with the ubers of the character that was originally selected.
Unlock Alternate Costumes: Complete ALL the chapters in your trick book. There is one more costume that this code doesn't unlock, the 'chrome costume', to unlock this one you need to complete the world circuit mode with a Master rank.
Unlock Pipedream Course: Win a medal on all Showoff courses.
Unlock Uberboards: Unlock ALL of the tricks for a character to get their uberboard.
Unlock Untracked Course: Win a medal on ALL Race courses.
the first two levels are the easyist levels in the game so start with eddie and get gold in the first two levels and then go to mac and do the same thing then you will unlock a new character and do the same thing with that one and so on and so on, soon you will have most of the character's.
At the title screen hold L1+R1, press X,X,Right,X,X,Down,X,X,Left,X,X,Up. If you put it in correctly you will hear a sound. Then choose any boarder at the character select screen.
Start a track and you should be Mix Master Mike. He copies the Uber tricks of who he replaces. Note:Enter again to go back to normal.
Mallora board and costume
At the title screen hold R1+L1, then press X, X, Right, O, O, Down, Triangle, Triangle, Left, Square, Square, Up. Release R1+L1. If done correctly you will hear a sound. Choose Elise and start a course. Note: This only works for Elise. Enter again to disable.
Perform the "???" trick
Go to a track with a Big Jump or Trick Boost. Hit one of these and do either a Rodeo, Misty, Front or Back Flip. By landing 4 of the same trick at one time, you will do the "???". (And yes, that is the name of the trick.)
Get the Fugi Board
Get a Gold Medal on every course, with every character, on their Uber Board. After this is done, the Fugi Board will be unlocked. It's the Best board in the entire game. It will allow you to perform the "???" trick, above, easier.
Enter your name as "RECOR" at the World Circuit. Choose any Boarder and he or she will be replaced by Rectator on the track.
Win a Gold Medal on all Showoff courses at the World Circuit. Play it any time in Free Run only. This is the ultimate trick course.
Win a Gold Medal on all Race courses at the World Circuit. Play it any time in Free Run only. This is the ultimate race course.