Extra characters:
At the Title Screen, press Right, Right, Right, Triangle, Left, Left, Left to enable extra characters.
Tarot Reading:
At the Title Screen, press Up, Triangle, Down, Triangle, Up. Now go to Options to find the new Tarot Reading selection.
Talk demo:
First enter the two codes above. Now at the Title Screen, press Square, Up, Left, Down, Right, Up, Square, Down, Left, Up, Right, Down, Square. You'll hear a sound to confirm. Check the Options menu for the new Talk Demo mode.
Extra world:
At the Title Screen, press Triangle, Left, Right, Left, Triangle. You'll hear a sound to confirm. Now choose Puzzle and then pick Arcade mode. Choose your difficulty level and then you'll be able to play a ton of new stages.