Revealing mistake: Mob Rules: After Lisa sets the statue on fire, the scene cuts to inside Mayor Quimby's office where he and the game producer are shown sitting in a hot tub with steam coming from it. For the first frame of the shot, the steam coming from the tub doesn't appear to have been animated. The steam literally pops up on screen a few frames after the shot starts.
Revealing mistake: Mob Rules: When Quimby tells the game producer he's ready to receive the bribe, the producer picks up a bag of money to show him and opens it. When he opens the bag, one of his fingers can be seen passing through the bag.
Continuity mistake: Mob Rules: When the game producer shows Quimby the bag of money, his right hand changes position between shots.
Continuity mistake: Mob Rules: When Mayor Quimby tells the mob that is going to ban Grand Theft Scratchy for minors, they all begin cheering. When they do so, the senator can be seen standing next to Marge and Lisa. Marge and Lisa begin talking, and the senator has suddenly disappeared.
Deliberate mistake: Invasion of the Yokel Snatchers: When Kang is arguing with Kodos about not picking up his space rake, there is nothing on the floor around them. Kang walks forward a few feet and suddenly a rake suddenly appears on the floor.
Revealing mistake: Big Super Happy Fun Fun Game: When Mr Sparkle is telling Homer and Lisa that he must return to his corporation, in the shot of him saying "Cel soy kills the hunger demon", Lisa can be seen positioned on top of one of the coin slots without falling into it, revealing an animation error where it appears she is hovering above it.
Other mistake: Big Super Happy Fun Fun Game: After the level has been completed and the village is made clean again, Milhouse begins to shrink back down from his Mr Dirt form to his human form. In the shot of him beginning to shrink, after his royal gear fades away, his eyebrows are temporarily missing.
Revealing mistake: Big Super Happy Fun Fun Game: When Mr Sparkle says "Most disrespectful", part of Lisa's hair can be seen passing over Homer's arm. The edge of her hair has been cut off to make it appear as if it has been obscured by Homer's arm, but since the hair can be seen passing over Homer's arm, then this is an animation mistake.
Continuity mistake: Big Super Happy Fun Fun Game: When Lisa asks Mr Sparkle how he would describe the evil CEO's attitude, Lisa's head is level with Homer's wrist. When the shot cuts to focus on Mr Sparkle, her head is almost level with Homer's shoulder.
Continuity mistake: Invasion of the Yokel Snatchers: When the aliens have the security guard beamed up to their ship, they are shown standing on a lighted area. They continue to stand in the same area without moving, but when Cletus confronts them a few seconds later, they are suddenly standing on a shadowed area.
Continuity mistake: Big Super Happy Fun Fun Game: In the opening cutscene, when Milhouse says "But I'm so huge", his shadow can be seen cast over the ground in front of him. This shadow cannot be seen in any other shot of the cutscene.
Continuity mistake: Invasion of the Yokel Snatchers: When the aliens lower a blue beam to take security guard up to the ship, in the shot of the beam being lowered, one alien can be seen standing next to the guard and another standing several meters away. In the next shot, the second alien is standing right next to the security guard.
Continuity mistake: Invasion of the Yokel Snatchers: When Cletus confronts the aliens, the blue building on his right changes appearance between shots.
Continuity mistake: Invasion of the Yokel Snatchers: When Homer and Bart are watching the citizens get sucked up, additional cracks on the ground in front of them suddenly appear in between shots.
Continuity mistake: Invasion of the Yokel Snatchers: In the establishing shot of the opening cutscene, to the right of shot, three bush plants can be seen in between the mall and the blue building next to it. A couple of seconds later, there is only one bush plant.
Plot hole: Bartman Begins: Whilst Homer and Bart are in the museum, they discover that the school bullies Jimbo, Kearney and Dolph are in the middle of robbing the museum. However, in the opening cutscene for this level, they were also seen standing outside the video game store just mere minutes earlier.
Continuity mistake: Bargain Bin: When Bart is on the computer, he is typing with his right hand and his left arm is by his side. The shot cuts to a shot of the computer and he is suddenly typing with both hands.
Continuity mistake: Mob Rules: When Homer talks about how much he wanted to be a human garbage disposal, there is a glass of milk in front of him. Two shots later, after Marge suggests if he should put his powers to good use, there is suddenly more milk in his glass.
Continuity mistake: Bargain Bin: When Bart is looking up the Simpsons Game on the computer, there is a computer mouse next to the keyboard, located about a foot away, but by the next shot, the mouse has suddenly moved closer.
Continuity mistake: Bargain Bin: When Homer places the Duff can on the computer DVD player, the can falls over and spills on the keyboard. In the next shot, the Duff can vanishes.
