Music Player
     In  order  to  unlock  the music player, complete the Story Mode.
This option will then be available in the Sound menu, available in the
main  screen,  by  clicking the purple option in the lower part of the
screen.

Promo cards
     Use  a  Nintendo DS Download Station to get the promotional cards
Omega Cannon, Ultima Weapon, Ragnarok, Shinryu, and Chocobo.

Credits mini-game
     Tap  the  letter  "O"  when  it  appears in names and other words
during the credits to earn a Silver or Gold rank and a card.

Easter Egg: Kingdom Hearts references
     Get  to  the house. Look at Croma and note the strong resemblence
to Vivi from Kingdom Hearts.