Other mistake: Big Super Happy Fun Fun Game: When Homer is crossing the bridge in the lava part of the level, as he reaches the second half of one of the logs, he begins to weigh down the log. If you switch to Homer Ball, he logs becomes less weighed down than when he was regular Homer, despite the fact that Homer Ball is basically an obese and more overweight Homer.
Other mistake: Grand Theft Scratchy: Two shots after Marge says "I just don't understand why Bart would want to play this game" shows three cats in a car pulling up to shoot three mice walking on the street. The cats take out their guns, aim straight at the mice and start shooting at them. The shot then cuts to the mice, completely unharmed and start shooting the cats. Before the shot cut to the mice, the cats were shooting their guns for a full 1-2 seconds. If the cats had their guns aimed directly at the cats and started shooting, even for this short amount of time, the mice would already be dead even before they could take their guns out.
Bug: Lisa the Treehugger. Xbox 360. In the last map it can occur that the timer to rescue Carl and Lenny drops down to 20 seconds after a few unsuccessful attempts, thus breaking the game.
Continuity mistake: Invasion of the Yokel Snatchers: Whilst Homer and Bart are watching the citizens being taken into the spaceship and Homer is asking where mall security is, there is a water fountain visible in the far background, and there is no-one standing next to it. The shot then cuts to the water fountain, where an alien is now beside it.
Continuity mistake: Bargain Bin: When the mothership flies over the Simpson house, Bart says this must be the level boss for this part of the game, at which point Homer puts on a pair of glasses to look busy. The mothership then starts firing on them and the family start running. When the shot cuts back to them after being fired at, the glasses Homer was wearing have disappeared.
Factual error: Lisa the Tree Hugger: After saving Lenny and Carl, Bart aims his slingshot at the target controlling the factory and fires a stone from the slingshot, hitting the target. Once the stone hits the target, debris from the impact can be seen flying off the target showing that it has been destroyed, but as the dust clears, the target is virtually intact.
Continuity mistake: Lisa the Tree Hugger: In the opening shot from the first cutscene in this level, there is dirt at the bottom of the door to the Auntie Nature logging company. The door is there throughout the opening cutscene, but there is no sign of the mud at the bottom of the door in any other shot.
Continuity mistake: Around the World in 80 Bites: After Homer has been declared the winner, a pair of massive dentures are unveiled and the winner of the previous race gives Homer the belt. When Homer is attempting to put the belt on him, there is a small distance between him and the dentures. In the next shot, Homer has suddenly moved closer to the dentures.
Continuity mistake: Mob Rules: When Ned says Grand Theft Scratchy is going to turn kids into Stabby Sam's and Drive-by Denny's, Lisa is standing straight facing Ned and Marge is standing 90° to the right. The shot cuts and suddenly Lisa is standing 90° to the left facing Marge and Marge is standing straight forwards facing Ned.
Continuity mistake: Mob Rules: When Mayor Quimby and the games producer notice the mob of parents outside the building, Marge is standing near the front of the mob and a senator is standing next to her. When the shot cuts to focus on the senator, Marge is no longer standing next to the senator and has been replaced by Snake Jailbird.
Continuity mistake: Enter the Cheatrix: When Professor Frink shows Bart and Lisa the strategy guide, Frink's left hand is holding onto one side of it. Two of his fingers are located next to Krusty and his little finger is partially obscuring Nelson. The shot cuts to a closer shot and his fingers are suddenly further away from both the image of Krusty and Nelson.
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.
Continuity mistake: Enter the Cheatrix: After Bart and Lisa have saved Professor Frink, Frink hands the strategy guide to Bart. Professor Frink activates the Rift Portal and Bart and Lisa walk over to it. At this moment, the strategy guide has vanished from Bart's hand. The guide reappears once Bart and Lisa have gotten in the Rift Portal.
Continuity mistake: Invasion of the Yokel Snatchers: When Homer and Bart are watching the mall being invaded, there is a fountain visible in the far background, next to the the mall. An alien is peeing in the same fountain beside the mall and mall security arrives. When the shot cuts back to Homer and Bart, we can see they are suddenly much closer to the water fountain.