Revealing mistake: When the gondolier tells Mario that Venice is being attacked, he is briefly layered outside his gondola. Additionally, his statement is false, as the Doom Sub has not arrived in the city yet. (00:01:08)
Revealing mistake: When the Chain Chomps start eating some poles, they are frozen for a few frames. (00:07:32)
Revealing mistake: When Mario says that he must be having a nightmare, his air bubbles freeze for a few frames. (00:08:00)
Revealing mistake: When King Koopa tells Kootie Pie to be patient, the camera zooms in on him, but the background does not adjust to the change of perspective. (00:09:04)
Revealing mistake: When the force field blocking the pipe to the real world disappears, it remains for a short time. (00:09:47)
Revealing mistake: When King Koopa tells Mario to give up, the Note Block Mario is on is floating above the ground. (00:10:02)
Revealing mistake: When the Doom Sub is warped to Desert Land, it remains for a short time. (00:10:29)