Continuity mistake: When first showing the Mushroom Land during the animated intro, there is no path present, but in the next shot, one appears. (00:03:47)
Continuity mistake: When Mario moves a curtain in the animated intro, there is no cavity in the shower, but in the next shot, one appears. (00:03:35)
Continuity mistake: When the magic carpet moves upward after Mario becomes Super Mario, Luigi's visor goes from green to skin colour and back to green.
Continuity mistake: This mistake is in the intro with Mario and Luigi in real life. When Mario breaks the ceiling while Bowser is holding a yellow bar, Mario's gloves disappear from his hands when he jumps to break the ceiling. When he lands, his gloves reappear back on his hands. (00:00:26)
