They do not offer much. They allow you to choose the length of your hair, the name of the first city, the name of the second city, and your own name.
Chat with our AI personalities
You could play it on both. Any DS game can play on your DSi
either trade from nightmare troubadour or use an action replay (don't know the code though)
You get to level 22 and beat Yami Marik Then you will have all packs available however some cards you have to trade to get.
Unfortunately, no previous YGO! DS games can link with World Championship 2008, so you cannot get the God Cards from Nightmare Troubadour. I know for a fact that "Slifer the Sky Dragon" was offered as a downloadable card for one day, so perhaps that is the only way of getting the God Cards. yes ghosts exists.
I am also looking for this code but so far it seems s if there isn't one so sorry