Hint: Prevent Summoning Exodia
Use this trick when you face Grandpa or Rare Hunter, as they are the only ones that have Exodia the Forbidden One. Jack most of your deck with cards that make your opponent discard cards from their deck and/or hand. Most of the time against Grandpa this trick will work. However, against Rare Hunter it is a challenge because he has three sets of Exodia compared to Gramp's single set.
Alternately, discard the head to the Graveyard; as it is the part of Exodia that allows the automatic victory.
Hint: Triple Duel opponents
The following is a lost of all the characters you will face in each of the levels in Triple Duel:
Level 1: Shimon, Grandpa, and Yugi
Level 2: Tea, Tristan, and Joey
Level 3: Bakura, Shadi, and Yami Yugi
Level 4: Weevil, Rex Raptor, and Mako
Level 5: Bonz, Bandit Keith, and Pegasus
Level 6: Mai, Yugi, and Kaiba
Level 7: Rare Hunter, Arkana, and Strings
Level 8: Espa Roba, Lumis, and Umbra, and Marik
Level 9: Ishizu, Odion, and Yami Marik
Level 10: Mai, Joey, and Marik
Level 11: Ishizu, Odion, and Yami Bakura
Level 12: Yami Marik, Kaiba, and Yami Yugi
Level 13: 3 Rare Hunters
Level 14: The Yamis of Marik, Bakura, and Yugi
Level 15: Kaiba's Dueling Machines
Hint: Unlocking characters in single duel mode
Shimon: Defeat level 1 in Triple Duel.
Grandpa: Defeat level 1 in Triple Duel twice.
Yugi: Defeat level 6 or defeat level 1 in Triple Duel three times.
Tea: Defeat level 2 in Triple Duel.
Joey: Defeat level 10 or defeat level 2 in Triple Duel twice.
Tristan: Defeat level 2 in Triple Duel three times.
Bakura: Defeat level 3 in Triple Duel three times.
Shadi: Defeat level 3 in Triple Duel.
Yami Yugi: Defeat level 14, level 12 or level 3 in Triple Duel twice.
Weevil: Defeat level 4 in Triple Duel twice.
Rex Raptor: Defeat level 4 in Triple Duel.
Mako: Defeat level 4 in Triple Duel three times.
Bonz: Defeat level 5 in Triple Duel twice.
Bandit Keith: Defeat level 5 in Triple Duel three times.
Pegasus: Defeat level 5 in Triple Duel.
Mai: Defeat level 10 or level 6 in Triple Duel.
Kaiba: Defeat level 12 or level 6 in Triple Duel three times.
Rare Hunter: Defeat level 13 or level 7 in Triple Duel.
Arkana: Defeat level 7 twice in Triple Duel.
Strings: Defeat level 7 in Triple Duel three times.
Espa Roba: Defeat level 8 in Triple Duel twice.
Lumis and Umbra: Defeat level 8 in Triple Duel three times.
Marik: Defeat level 10 or level 8 in Triple Duel.
Ishizu: Defeat level 11 or level 9 in Triple Duel twice.
Odion: Defeat level 11 or level 9 in Triple Duel three times.
Yami Marik: Defeat level 14, level 12 or level 9 in Triple Duel.
Yami Bakura: Defeat level 14 or level 11 in Triple Duel.
Rare cards
When you put in a new name such as GOD OF CARDS or HEARTOFCARDS 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.
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Use other decks
Unlock the desired tier in triple duel mode. Then, hold
X at the opponent selection screen in single duel mode to bring up a deck selection screen. You may now choose anyone's deck from that tier. This allows to you see what is in the other character's decks and use them against an opponent in single duel mode.
When at the single duel screen, hold X. In order for this to work you must unlock all tiers and view the credits at least once.
Dennis Martinez.