Continuity mistake: When the helicopter appears in front of Yugi and Kaiba, their arms are by their sides. When the shot cuts, Yugi's right arm and Kaiba's left arm are suddenly over their faces. (00:10:25)
Continuity mistake: Just before the duel starts, Yugi and Kaiba activate their duel disks. In the shot of Yugi raising his arm and activating his duel disk, Kaiba can be seen in the background with his arm raised and his duel disk activated. Then there is a wide shot of the characters on the roof; Yugi and Kaiba's arms are suddenly by their sides. (00:14:28)
Continuity mistake: At the end of Yugi's first turn, he thinks to himself, "Hopefully, by then, I can pick up on their strategies." At this moment, Umbra has his right arm at his side. In the next shot, his right arm is raised, and his hand is suddenly holding onto a card. (00:15:39)
Legendary Fisherman: Part 2 - S2-E20
Continuity mistake: When Joey activates Energy Drain, his right hand is touching his duel disk. When the shot cuts, his right arm is extended, presumably away from the duel disk. (00:06:03)
Legendary Fisherman: Part 2 - S2-E20
Continuity mistake: When Marik asks Bakura how strong his duelling skills are, Bakura replies, "They're extremely strong." At this moment, Marik has his Millennium Rod raised. When the shot cuts, it is lowered. (00:10:21)
Continuity mistake: When Marik is running up to Joey and Tea, the two turn around to face him. Tea is facing Marik directly and Joey is rotated at an angle perpendicular to Marik. In a wide shot, Joey is facing Marik directly and Tea is standing at a perpendicular angle. (00:06:04)
Continuity mistake: When Yugi hangs up the phone after realising Marik's hunters have found his friends, his index finger is straight. Then it is bent when the shot cuts. (00:07:42)
Continuity mistake: When Yugi's life points go down to 3100 after Slifer the Sky Dragon destroys Buster Blader, his Kuriboh card is face down on his duel disk, even though it was face up when he summoned it earlier. Seconds after this happens, his Kuriboh card is suddenly face up on his duel disk. (00:14:19)
Continuity mistake: When Yugi wins the duel, there is a shot where Kaiba and Mokuba can be seen in the background. A briefcase can be seen next to Mokuba, but when it cuts to a closer angle of the two, it has changed position. (00:15:29)
Other mistake: When Yugi summons Gazelle the King of Mythical Beasts, the attack and defence points display shows it to have 2100 defence points. This monster only has 1200 defence points, as shown on the card when Yugi summoned it. (00:10:55)
Legendary Fisherman: Part 1 - S2-E19
Other mistake: When Joey summons Alligator Sword, the bottom half of its face is coloured green. The card illustration for the Alligator Sword monster shows the bottom half of its face to be coloured yellow, while the top half is green. (00:17:50)
Legendary Fisherman: Part 1 - S2-E19
Revealing mistake: When Joey summons Garoozis, Mako says, "Nice try," and activates his face-down card, Torrential Tribute. Right before the face-down card is revealed, the cards he is holding in his hand can be seen, and they are all missing the illustrations. (00:14:12)
Continuity mistake: During the flashback of Yugi building the Millennium Puzzle, in the establishing shot, Yugi has his left hand on the back of the puzzle. But in a close-up of the puzzle, his left hand is across the side of it. (00:04:43)
Playing with a Parasite: Part 2 - S2-E15
Other mistake: When Weevil's life points are reduced to 3250, it cuts to the laptop in Serenity's hospital room. The display shows Weevil's life point count going down to 3250 as well, but once the points stop reducing to 3250, there is a brief moment where Weevil's life point count suddenly switches to 0 at the end of the shot. (00:11:50)
Playing with a Parasite: Part 1 - S2-E14
Other mistake: When Weevil summons Leghul to the field, the card is shown to have 350 defence points when it is placed on the duel disk. When the monster appears on the field, the attack and defence points display shows it to have 500 defence points. (00:17:47)
Playing with a Parasite: Part 2 - S2-E15
Other mistake: After Weevil summons Insect Queen, the scene cuts to the laptop in Serenity's hospital room where the duel is being streamed. The display on the laptop of the duel shows no monster cards on Weevil's field, even though he just summoned Insect Queen. (00:08:30)
The Master of Magicians: Part 3 - S2-E13
Continuity mistake: Just after Arkana says, "You'll have to speak up, I'm afraid I can't quite hear you," it cuts to a close-up of the dark energy disc (buzzsaw in the Japanese version), and it is positioned to the right of the number 1000. In the next shot from far away, it is positioned to the left of the number 1000. (00:03:00)
Playing with a Parasite: Part 1 - S2-E14
Continuity mistake: When Weevil hands the boy the "rare card," the front side is facing Weevil. When the shot cuts, the front side of the card is facing the boy. (00:05:22)
Playing with a Parasite: Part 1 - S2-E14
Continuity mistake: Joey sacrifices his Swordsman of Landstar so that he can summon Jinzo to the field. He is shown putting the Jinzo card on his duel disk, but when it is shown on the duel disk again after Weevil sets a monster face down, the Jinzo card is now upside down. (00:09:57 - 00:10:21)
Playing with a Parasite: Part 1 - S2-E14
Continuity mistake: When Skull-Mark Ladybug is destroyed, Weevil's left arm is raised to be level with his chest. In a closer shot of Weevil, his left arm is raised further, so that he can show Joey his life point count increasing. (00:11:14)
