Continuity mistake: When Wizenheimer explains that he is an evil Koopa Wizard, Mario's black moustache turns brown. In the same shot, he and Luigi's grey shackles turn white like their gloves. (00:05:14)
Continuity mistake: When Mario tells Yoshi to not be afraid, the number of fingers he has on each hand switches from five to four. (00:01:54)
Continuity mistake: When Mario falls into the cage, King Koopa disappears. (00:07:29)
Continuity mistake: When Mario rips the tent, the lock on the cage faces away from it, but in the next shot, it faces towards it. When Luigi, Yoshi, and the cave people cheer for Mario, the lock returns to its original orientation. (00:10:12)
Continuity mistake: When Luigi, Yoshi, and the cave people cheer for Mario after he saves Princess Toadstool, the white stripes on Yoshi's tail turn green. (00:10:51)
Revealing mistake: When Mario and a Mechkoopa duck underneath the Koopa Clown Car, they can be layered over it. (00:10:39)
Continuity mistake: When Mario jumps on a Mechkoopa, his black eyebrows turn brown. (00:10:26)
Revealing mistake: When Mario runs past Big Mouth and some Koopa Football Players, he is layered underneath them. (00:09:43)
Continuity mistake: When Luigi is giving some ice cream, his white gloves turn the same color as his skin, while the stripes turn the same color as his shirt. (00:11:08)
Continuity mistake: When Mario sees Princess Toadstool in the Koopa Clown Car, his white gloves turn the same colour as his skin. (00:10:18)
Revealing mistake: When Koopa football players start throwing baseballs at Mario, a block is layered over one of them. (00:08:57)
Revealing mistake: When Mario and Luigi realise that the clowns are dinosaurs, part of Mario's mouth briefly detaches from his face. (00:06:35)
Revealing mistake: When Mario jumps onto a moving platform, he passes through it. (00:09:29)
Revealing mistake: When a Ball 'N' Chain swings over to Mario, Mario overlaps it. (00:09:18)
Revealing mistake: After Mario jumps over the statue, he is layered in front of and behind the wall. (00:09:14)
Continuity mistake: When Princess Toadstool throws the Fire Flower to Mario, the underground is depicted at ground level. (00:08:34)
Revealing mistake: When Mario suggests grace to the Dino-Torch, his moustache overlaps on it. (00:08:18)
Revealing mistake: When a Rex trips on a pie, the nose on its costume overlaps on Big Mouth as he passes. (00:06:31)
Revealing mistake: When the pie launcher starts launching pies, the crank is not moving, even though King Koopa is cranking it. (00:06:11)
Audio problem: When Big Mouth is hit by a pie, the audio is unsynchronised. In the same shot, Big Mouth's body is missing. (00:05:28)