TCG basics from the beginning, from your first card draw, through Summons and battles, to the Extra Deck's Synchro and Xyz Monsters.After completing the teaching Duel, the Decks can be re-assembled to go through it again or used as standard and complete Dueling Decks to launch your journey into the Yu-Gi-Oh
And, of course, the wireless function of the Nintendo DS works excellent when battling against other players since they dont have to be tethered so close together as in the GBA link cable
Not only that, but Caius is also a solid midgame option when your Goblin Zombie is stranded without a tuner
Also, your trunk of cards can only hold up to three copies of every card, and the card rewards for beating Campaign levels and recipes take that into account, never giving you cards that you already own the maximum number of copies you could have (3)