Other mistake: Shadow of the Colossal Donut: Homer and Bart run past Kent Brockman in an attempt to go after Lard Lad. After running past Brockman, they turn onto the street on their left. Brockman goes after them, but instead of turning left, instead runs straight forward, but somehow still interviews Homer and Bart whilst running down the street anyway.
Other mistake: Big Super Happy Fun Fun Game: At the start of this level, Mr. Dirt (i.e. Milhouse) emerges from the ocean, but Mr. Dirt is approximately 30 feet tall and the water is far too shallow for him to have been hiding his entire body inside the water. The water only goes up to his knee area whilst he is standing in the ocean.
Other mistake: Game Over: When the game engine is being destroyed, Private Burns and the skeleton of Otto are exiting the wrong game. Private Burns was a character featured in Medal of Homer, but he is exiting the NeverQuest game and the skeleton of Otto was one of the side villains to destroy in the NeverQuest game, but is exiting the Medal of Homer game.
Other mistake: Bartman Begins: Homer and Bart are in a dinosaur exhibit, trying to get Bart to fly off the dinosaur skeleton to the other side, whilst also fighting off some guards, and the exhibit continues through the next room where they are stopping Dolph. In these parts of the level, night time is visible outside of the windows - it is supposed to be day time during this level.
Other mistake: Game Over: When Homer and Bart are battling Shakespeare, if the player transforms into Homer Ball and Shakespeare starts throwing skulls, the skulls will go straight through Homer.
Other mistake: Bargain Bin: Whenever Homer and Bart fall off the platform, they would usually die from the fall. As they hit the ground, they go through some random object on the floor. If there is no object on the floor, then they just land on the ground, but still continue to act as if they are falling.
Other mistake: Shadow of the Colossal Donut: Homer and Bart's main and only objective in this level is to open each of the three hatches inside Lard Lad and rip out the circuits inside him. To open the hatch, Bart will need to launch a slingshot at Lard Lad's hatches. After the hatch is opened, and the circuits have been ripped out, the hatch will always vanish completely.
Other mistake: Around The World In 80 Bites: On the Wii and PSP versions, once Homer and Bart make it into America, only two or three of the other people in the race still come inside America. The other contestants just continue to run around Italy, not even proceeding to the next part.
Other mistake: Bartman Begins: When Bart drops the huge dinosaur skeleton on top of Dolph, Dolph is still shown standing despite the huge skeleton landing on top of him. His body also passes through one of the ribs.
Other mistake: The Land of Chocolate: Homer starts off in The Land of Chocolate with the Population sign behind him. Homer then runs about 40 yards and runs into the village of Fudgetown. When the level starts, if you go the wrong way from what you are supposed to, you can see the Land of Chocolate population sign only a couple of yards away from where you start.
