Unlock Galaxy Circuit:
     Finish each race as one of the top three.

Unlock Reverse Mirror Tracks:
     Win a gold medal on the Galaxy Circuit with any character.

Unlock Darth Vader:
     Win a gold medal on the Galaxy Circuit with Anakin Skywalker.

Quick start:
     Hold R2 + X (accelerate and jump) a moment before the final start
light illuminates to get a speed boost off the starting line.

Unlock AAT battle tank:
     Press Circle, Square, Circle, Square at the main menu.

Unlock Boba Fett:
     Press Square, Circle, Circle, Square at the main menu.

Unlock Naboo Kaadu racers:
     Press L1, R1, L2, R2 at the main menu.

Unlock Power Queen Amidala:
     Press Down, Select, Up, Select, Left, Right, Select at the main menu.

Unlock Shark racers:
     Press Up, Right, Down, Left, Select at the main menu.

Unlock Arena Battle tracks:
     Press Up, Up, Down, Down, Left, Right, Left at the main menu.

Unlock Death Star mode:
Press R1, R1, R1, R1, Up, Left at the main menu. 

Unlock Super honk:
     Press Circle, Circle, Circle, Circle, L2, Select at the main menu.

Unlock backwards racing:
     Press L2, L2, L2, L2, Circle, Select at the main menu.

Unlock Fast and small racers:
     Press L1, L1, L1, L1, R2, Square at the main menu.

Unlock Spinning mode:
     Press Up, Left, Down, Right, Left, Up, Down at the main menu.

Unlock Slippery mode:
     Press Left, Right, Square, Circle, L1, L2 at the main menu.

Unlock Infinite boost:
     Press L1, R2, L1, R2, Square, Select at the main menu.

Unlock Space Freighter arena:
     Press L1, R1, Select, Circle at the main menu.

Switch language:

To German: Press Select, Select, Select, L1 at the main menu.
To Spanish: Press Select, Select, Select, R1 at the main menu.
To French: Press Select, Select, Select, R2 at the main menu.
To Italian: Press Select, Select, Select, L2 at the main menu.
To English: Press Select, Select, Select, Circle at the main menu.
To Jawa: Press Select, Select, Select, Square at the main menu.
To Battle Droid: Press Select, Select, Select, Up at the main menu. 

Unlock All Tracks:
     Start a 2 player team game and no matter what you can't get below
third  place,  which  will  give  you the next track available. Repeat
through all of them and you get them all.