Revealing mistake: When Pegasus is looking at Yugi's result stats, in the shot of him saying "Wonderful. I expected no less," the outline of his blazer sleeve can be seen overlapping with the wine glass on the table. (00:03:15)
Other mistake: When the security guard knocks over Tristan, he lands on the ground in front of him. The boy that he was grabbing onto before can be seen behind Tristan, and the guard lands in front of Tristan, but in the next shot, the guard walks over to the boy without Tristan being in the way. (00:04:35)
Continuity mistake: At the start of the duel, Ghost Kaiba picks one card from the five held in his left hand. He picks the card using his right hand and holds it by the top. In the next shot, his fingers are holding the bottom of the card. (00:04:49)
Revealing mistake: When Ghost Kaiba has summoned Blue Eyes White Dragon to the field, after Mokuba says, "That means what they said, could it be true," there is a shot from behind Yugi where we can see the cards in his hand and on his field appear to be blank and have no illustrations. (00:10:28)
Continuity mistake: When Joey reaches for the cards on the ground, all the cards are face down. Two shots later, one of the cards is face up. (00:01:25)
Continuity mistake: When Bakura is showing everyone the Millennium Ring, Joey says, "I hate magic," and his right hand is positioned in front of his abdomen. When the shot cuts, his right hand cannot be seen over the front of his abdomen. (00:18:03)
Evil Spirit of the Ring - S1-E13
Continuity mistake: When Yugi summons the Cyber Commander, he places it on the duel mat, but when the shot cuts, it is facing the opposite direction. (00:03:30)
Evil Spirit of the Ring - S1-E13
Continuity mistake: When Bakura asks, "Which of your friends will you sacrifice next?" there is a close-up of the cards in Yugi's hand. In this shot, his right hand is not touching any of the cards. When the shot cuts, his right hand is suddenly touching one of them. (00:05:12)
Evil Spirit of the Ring - S1-E13
Continuity mistake: When Joey is summoned to the field as Flame Swordsman, he turns around to see Giant Yugi. The purple section of the card can be seen behind him when he says, "Oh man, I finally cracked," but in every other shot of Joey whilst he is speaking with Yugi, the card can be seen behind him and it is completely blank. (00:05:38)
Evil Spirit of the Ring - S1-E13
Continuity mistake: When Joey destroys the Morphing Jar monster, Yugi and Bakura discard the cards in their hands and redraw the same number of cards. When Yugi draws the last card, his right hand is touching it. In a close-up of the cards, where it's revealed the last card was Dark Magician, his right hand is not touching it. (00:07:30)
Evil Spirit of the Ring - S1-E13
Other mistake: When the effect of Magician of Faith is activated, there is a shot from above that shows the card with the wrong attack and defence points. Magician of Faith has 300 attack points and 400 defence points, but in this shot, it has 2500 attack points and 2100 defence points. These are the same points as Dark Magician, but not Magician of Faith. (00:15:36)
Winning Through Intimidation - S1-E15
Continuity mistake: When Yugi activates Swords of Revealing Light, in a wide shot from behind Yugi, the shackles around his ankles cannot be seen. (00:04:00)
Winning Through Intimidation - S1-E15
Continuity mistake: Panik's Metal Guardian can be seen on the field several minutes before he actually plays it. (00:10:30 - 00:13:00)
Winning Through Intimidation - S1-E15
Continuity mistake: When Yugi says, "The time for talk is over. That was your last turn," he has three cards in his hand. In the next shot, he has four cards in his hand. (00:11:32)
Winning Through Intimidation - S1-E15
Deliberate mistake: In the actual card game, attacking the castle ring would not be allowed, but this is probably done in order to enhance the show for kids.
Double Trouble Duel, Part 1 - S1-E19
Revealing mistake: When Joey places his Ax Raider card on the duel mat, the card appears to be entirely yellow and missing the illustrations usually shown on the card. (00:15:20)
Double Trouble Duel, Part 1 - S1-E19
Revealing mistake: In the overview shot of Dox placing Jirai Gumo face down, all the cards in his hand appear to be missing the illustrations. (00:16:08)
Double Trouble Duel, Part 2 - S1-E20
Continuity mistake: After Magical Labyrinth has been activated, the maze on the duel field begins to rearrange itself. There is a shot of the duel monsters on the field, where Dark Magician has his arms crossed. When the shot cuts, his arms are lowered. (00:06:00)
Double Trouble Duel, Part 3 - S1-E21
Continuity mistake: When Yugi says, "It's going to be up to Joey to keep us in this duel, and I know he won't let us down," Joey begins to lift a card from his deck. In the close-up of Joey's hand, the card is raised slightly, but when the shot cuts, the card hasn't been raised. (00:12:00)
Double Trouble Duel, Part 3 - S1-E21
Other mistake: Joey activates the monster card Copycat and uses its ability to activate the ability of the spell card Riyoku. This spell card allows him to take half of the brothers' life points and add it to his Black Skull Dragon. The brothers lose 450 life points each (totalling 900 points), but Black Skull Dragon only gains 800 attack points (from 3200 to 4000) instead of 900. (00:12:24)
