Continuity mistake: When Jaden is finishing off his painting of Sparkman, in the shot of him saying "It's a work of art. It's pure genius", his left hand is placed against the lower left side of the pad. In the same shot, he brushes a huge smear of red paint against the bottom half of the page. When the shot cuts, his left hand is nearer to the top of the pad, there are now paint smears are now across the top half of the page, and the paint smear along the bottom of the page has disappeared. (00:02:02)
Continuity mistake: In class, Syrus holds up a painting he made on his notepad for Jaden to see. Take note of the size of the pad, because a couple seconds later, after Jaden's painting of Sparkman is shown, the notepad is suddenly much smaller than it was seconds earlier. (00:01:55)
Continuity mistake: When Crowler sacrifices his two Ancient Gears, he has his right hand raised in the shot where the two monsters vanish from the field. Then it cuts to a closer shot of Crowler, where his right hand is lowered. (00:07:23)