When you put in a new name such as GOD OF CARDS, you will get a rare card such as Tri-Horn Dragon. If you enter KONAMI as a game, you will get Cosmo Queen. When you put XBOX as a game, you will get Zera the Mant.
Getting Higher In Triple Dueling
Getting to the next level is quite easy. If the order is easy, medium, hard, it could be a challenge. However, by putting them in hard, medium, easy order you can save your life points for an easy person. You should be able to complete it.
Easy Magic And Trap Cards
To get easy magic and trap cards, unlock the Rare Hunter in triple duels. Then, just keep defeating him until you get the cards that you need. He has all the best magic and trap cards required for a deck. He three sets of Exodia and multiple limited cards such as Pot Of Greed.
Use Opponent's Decks
Beat every opponent in triple duel mode and hold X at the opponent selection screen in single duel mode.
Alternate Backgrounds
In the main menu highlight single or triple duel and press X. The background will change to an unlocked card.
Get Rare Cards
Card Name - How to Get
Dark Necrofear: Duel Odion and pick the Obelisk Statue /or/ Duel Bakura and pick the Ra or Slifer statue
Valkyrion the Magna Warrior: Duel Yami Yugi and sacrifice Beta, Gamma and Alpha to put it in play and pick the Ra /or/ Slifer statue
Exodia Set: Duel Rare Hunter /or/ Grandpa and pick the Slifer and Obelisk statues
Mirror Force: Duel Yami Yugi /or/ Joey and pick the Ra and Slifer statues
Jinzo: Duel Joey and pick the Slifer statue
Magic Cylinder: Duel Kaiba and pick the Slifer statue
Red-Eyes Black Dragon: Duel Joey and pick the Obelisk statue
Summoned Skull: Duel Yami Yugi and pick the Obelisk /or/ Slifer statue
B. Skull Dragon: Duel Joey and pick the Obelisk statue
Polymerization: Duel Pegasus and pick the Obelisk statue
Gaia the Fierce Knight: Duel Yami Yugi and pick the Obelisk statue
Cyber Stein: Duel Marik in a Triple or Single duel and pick the Slifer statue
Pot of Greed: Duel Grandpa and pick the Slifer statue
Swords of Revealing Light: Duel Rare Hunter and pick the Slifer /or/ Obelisk statue
Card Destruction: Duel Yami Bakura and pick the Obelisk statue
Axe of Despair: Duel Yami Yugi and pick the Obelisk statue /or/ Duel Kaiba and pick the Slifer statue
Monster Reborn: Duel Kaiba and pick the Slifer Statue /or/ Duel Joey and pick the Obelisk statue
Tribute to the Doomed: Duel Yami Bakura and pick the Slifer statue
Change of Heart: Duel Yami Bakura and pick the Ra statue
Delinquent Duo: Duel Arkana and pick the Obelisk statue
Dark Hole: Duel Yami Bakura and pick the Slifer statue
Unbeatable deck
If you have 1 set of Exodia plus 35 Pot of Greeds, you cannot lose.
One Mistake
The one mistake in the rules i found in this game is, there are no limits to the number of the same card you can have in your deck (you can have 60 of the same card if you want to).