Audio problem: When Yoshi asks what doom is, his mouth moves before any sound comes out. (00:04:13)
Revealing mistake: When Mario and his friends reach Kastle Koopa, a railing is layered over Mario. (00:04:07)
Continuity mistake: When Mario goes out of bounds to hit the ball, he is briefly layered behind Yoshi. In the same shot, the white stripes on his gloves turn blue like his shirt. (00:03:16)
Continuity mistake: When King Koopa says, "The cave people will become food for his dinosaurs," his cream claws turn yellow like the spikes on his shackles. (00:03:03)
Continuity mistake: When King Koopa is first seen in a Koopa Clown Car, the rim around it is white, but in the next shot, it is green. (00:02:45)
Continuity mistake: The score for the tennis match can be 30-love before Luigi announces it. (00:01:35)
Continuity mistake: When Luigi explains that ball boys pick up balls instead of eating them, the number of fingers he has on each hand changes from five to four. This also happens when Mario says they should check out the circus, along with Mario. (00:02:02 - 00:04:22)
Continuity mistake: When Kootie Pie is putting up a poster, her cream snout turns orange like her body. (00:02:09)
Revealing mistake: When two cave kids enter the Warp Pipe, they move without moving their legs. (00:03:04)
Continuity mistake: At the beginning of the episode, the circus for Dome City can be seen, even though Mario and his friends have not hosted it yet. (00:01:30)
Continuity mistake: When a downward view is shown of Luigi and Princess Toadstool holding onto the stands, the wristbands on Luigi's gloves go from white to blue.
