In Yu-Gi-Oh! Duel Monsters 7: The Duelcity Legend and Yu-Gi-Oh! The Sacred Cards, Tristan does not Duel, but accompanies the player character in some of the events throughout the game.
In Yu-Gi-Oh! Duel Monsters 8: Reshef of Destruction and Yu-Gi-Oh! Reshef of Destruction, Tristan hangs around outside Kame Game, with his pet dog Lucky. The player can Duel him at that location. At one point, Tristan leaves to buy food. His friends who were unaware of his departure, believe that he got transformed into a Monkey Robot, due to the resurrection of Reshef.
Tristan's WCT2005 deck is a big improvement over his '04 one. His strategy
revolves around using equip spells and fusing monsters to form strong ones like
Skull Knight and Meteor B. Dragon. He's one of the most challenging tier 1
opponents in the game, surprisingly enough, as he uses equip spells that can be
put back at the top of his deck if they're sent from the field to the