Continuity mistake: When Syrus finishes his scary story, Jaden places the card Syrus was using face down on the table. In the next shot, the card is suddenly face up and has been replaced with a different one. Then in the shot after that, it is suddenly face up at a different part of the table. (00:02:23)
Continuity mistake: After Jaden has picked up the Level 1 card, in the shot of Syrus saying to Jaden he really lucked out, there is one card on the table in front of Chumley. A couple seconds later, when the shot focuses on Chumley and Syrus after Jaden begins the story, there are suddenly two cards in front of Chumley. (00:02:29)
Continuity mistake: Jaden picks up a card from a deck which is revealed to be a Level 1 monster. He then places it on the table, still face up, on top of two other cards. When the shot cuts, it is suddenly face down, and the two other cards have disappeared. Then over a minute later, in the close-up of Professor Banner picking a card up from the deck, one of the monsters has reappeared next to the Level 1 monster. (00:02:29 - 00:03:43)
Continuity mistake: After Jaden finishes his scary story, when he says, "That's the end of the story", he is looking straight forward at Syrus and Chumley, but in the next shot, he is suddenly looking upward slightly. (00:03:15)
Revealing mistake: When Jaden says he's started hearing voices again, it cuts to a close-up of a flashback showing Jaden holding the Winged Kuriboh card. The shot appears to be flipped as the LIGHT symbol on the card, as well as the illustration of the card is reversed, compared to every other time this card is shown. (00:03:20)
Continuity mistake: After Professor Banner asks, "Don't you want to hear about the abandoned dorm at the end of the island?", Jaden replies "Abandoned dorm?", whilst hunched forwards. In the next shot, he is suddenly sitting upright. (00:03:55)
Continuity mistake: When Banner tells the trio that shadow duels are duels played with powerful mystical items, Jaden's hands are on the table, but when the shot cuts, Jaden suddenly has his right hand on his chin. (00:04:25)
Continuity mistake: After Banner mentions the powerful mystical items, Jaden replies "Millennium items, right. I've heard about this, but it's not true" and is smiling when he says this. In the next shot, he suddenly isn't smiling. (00:04:29)
Continuity mistake: When Jaden asks Alexis why she is at the abandoned dorm, Alexis replies, "I have my reasons that's why" and raises her right hand to her chest. In the next shot, her right hand is suddenly lowered. (00:08:42)
Continuity mistake: When Chumley hands Jaden his duel disk, Jaden puts it on and his deck of cards cannot be seen inside it. Jaden then walks over to face the Shadow Duelist, where his deck is suddenly inside the duel disk. Then a few seconds after that, he puts the deck of cards in the duel disk. (00:12:13)
Revealing mistake: When the duel begins, the Shadow Duelist goes first. He has five cards in his left hand and draws a sixth card from his deck. He then places the sixth card next to the fifth card, and then picks up the fifth card in his hand, but the sixth card remains in the same position, without its position being affected by the fifth card being picked up. (00:12:32)
Revealing mistake: After the Shadow Duelist summons Infernal Queen Archfiend, Jaden says, "An Archfiend monster?" and the shot cuts back to the Shadow Duelist saying with that card on the field, every monster with Archfiend in its name gain 1000 attack points. In this shot, take note of the cards he is holding in his hand. He only appears to be holding onto two of the cards, but every other card in his hand appears to be held perfectly fine despite him not holding onto them. (00:12:41)
Continuity mistake: When Jaden tells the Shadow Duelist to leave his friends out of this, he draws a card with his right hand. When he does this, his left hand is lowered, but when it cuts to a close-up of the cards in his hand, his left hand is suddenly raised to be level with his right hand. (00:14:00)
Character mistake: The Shadow Duelist activates the effect of Terrorking Archfiend, where he states if the monster is targeted by an opponent's card, a number between 1 and 6 is chosen at random, and if the number selected is 2 or 5, then Terrorking Archfiend won't be affected by it. Chumley then states the odds are in Jaden's favour, to which Syrus dismisses this, saying he flunked math. However, Chumley is actually correct, as the odds for Jaden are 4 in 6, whereas the odds for the duelist are 2 in 6. (00:15:45 - 00:16:09)
Revealing mistake: After the Shadow Duelist has activated the effect of Terrorking Archfiend and the flame has landed on the ball labelled 2, just as he says, "Mirror Gate is shattered", the card shown on his duel disk is misshapen, where two corners of the card are curved, instead of being straight. (00:16:23)
Other mistake: When Jaden realises his arm is fading away, the Elemental Hero Clayman card shown on his duel disk is shaded orange. It should be shaded yellow, as it is not an effect monster, and effect monsters are shaded yellow. The same mistake occurs around a minute when the Shadow Duelist says, "It's your move, but make it count, it may be your last." (00:17:28 - 00:18:22)
