Chocobo to Mahou no Ehon

Go to "Download Pop-Up Card" and enter the following codes while it says "Looking for available Downloads".

Tap the letter "O" when it appears in namesand other words during the credits to earn a Silver or Gold rankand a card.
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To get the Omega Cannon, select "Send" from the main menu and "Download Card." Press the L button twice, then Up, the B button twice, then Left on the D-pad.

• Get to the house. Look at Croma and note the strong resemblance to Vivi from Kingdom Hearts.

• Go to the Mog's shop. Stand in the circle and note that the symbol is actually the Kingdom Hearts symbol.

At the Technolith, when you see the iron giant on the ground talk to Cid. He will say that it's model number is "Z4815162342" which includes the recurring series of mystery numbers from the television show Lost.

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.

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

Get a "Gold" and "Silver" rank in Cliff Hanger.