Continuity mistake: Big Super Happy Fun Fun Game: When Milhouse finishes shrinking back down to human form, the keycard suddenly appears in his hands when the shot cuts.
Continuity mistake: Big Super Happy Fun Game: In the opening shot of the end cutscene, the coin slots on the giant toilet are shown with the middle slot ahead of the other two. When Homer and Lisa go to insert the Sparklemon into the slots, the three slots are more in line with each other and stay that way for the rest of the scene.
Continuity mistake: Mob Rules: When the mob begin cheering after Quimby bans Grand Theft Scratchy, they are standing on the curb. When the shot cuts, the mob is now standing on the road and Marge and Lisa are the only ones standing on the curb.
Continuity mistake: Big Super Happy Fun Fun Game: The giant toilet in the village has an additional section added onto the right-hand side of it, which has three coin slots and is used to insert the Sparklemon into. When Mr Sparkle goes to clean up the village, this additional section has disappeared from the toilet.
Continuity mistake: Bargain Bin: When the mothership flies away from the Simpson house, the family are shown standing next to a small wall. In the next shot, they are standing a few meters ahead of it.
Revealing mistake: Mob Rules: After part of Town Hall collapses, the shot cuts to Marge and Lisa. Lisa can be seen holding a lit torch, but for the first frame of the shot, the fire doesn't appear to have been animated onto the torch. The fire just pops up on-screen a few frames after the shot starts.
Continuity mistake: Big Super Happy Fun Fun Game: When Milhouse loses his powers and hands Homer and Lisa the keycard, the amount of rocks on the ground change between shots. At first, there are two rocks behind him to his left, but when the shot cuts, there is only one rock behind him to his right.
Continuity mistake: Invasion of the Yokel Snatchers: When the water fountain is first shown, there are two rows of sprinklers shown around the fountain spraying water. One row of sprinklers around the edge of the fountain and a second row along the interior. When the shot cuts, the row of sprinklers around the edge of the fountain are no longer spraying water, leaving only the interior row spraying water.
Continuity mistake: Mob Rules: When the Scratchy statue is knocked down, the head rolls away and crashes into Town Hall causing part of the building to collapse. Two window frames can be seen falling beneath the rubble. When the shot cuts, the window frames are suddenly above the rubble.
Continuity mistake: Game Over: After everyone escapes the Game Engine, it cuts to an exterior shot of the Simpson house. In the shot, a red mat can be seen outside the front door. Later, when Lisa goes outside, the mat is now green. There is also a tap attached to the house shown in the establishing shot that disappears when Lisa goes outside.
Continuity mistake: Bartman Begins: When Bart is in the alley way and starts walking down the path leading to the main street, the building to his right has a window located a few inches to the edge of the wall. Seconds later, when Bart begins reading the manual, the window is much further away from the edge of the wall.
Continuity mistake: Day of the Dolphin: When Lisa is telling Captain McAllister she's so sorry after he explained what happened, he says "Don't you dare pity me" and takes out his smoking pipe. When he takes it out, he has his index finger and middle finger holding onto the breathing tube. But in the next shot, the breathing tube is on top of his index finger.
Continuity mistake: Bartman Begins: When the Simpsons Game manual lands in front of Bart, in the wide shot, his right foot is pointed to the right and his left foot is pointed to the left. When it cuts to a shot focusing on the manual, Bart's feet are pointed directly forwards.
Continuity mistake: Bartman Begins: When Bart kneels down to pick up the Simpsons Game manual, there are heavy shadows cast on the wall beside him. In the next shot, the shadows are a lot thinner and there is more sunlight cast on the wall.
Continuity mistake: Bargain Bin: When the Simpsons run outside to see the mothership, Bart has the strategy guide that Professor Frink gave him in his hands. In a closer shot, it has vanished. When the shot cuts again, he is now shown holding the manual with the yellow cover he got in Bartman Begins and not the blue cover strategy guide that he should currently have at that point in the game.
Revealing mistake: Bartman Begins: When Bart goes into the store for a copy of Grand Theft Scratchy, there are four copies of the game shown on the counter beside the Squeaky Voiced Teen, but the front cover for the game on the bottom left is drawn out differently than the other three. It appears more stretched out and part of the cover has been cut off.
Continuity mistake: Bartman Begins: When Bart shows the Squeaky Voiced Teen the Cal's Calzone Frequent Calzone Eaters card, he first has three fingers placed on the card - one above the other finger with the side of his finger placed on the card and the same for the second one below it and a third finger pushed against the second. In a sudden close-up of the card, it is now four fingers pushed against the back of the card.
Character mistake: Big Super Happy Fun Fun Game: During the battle between Homer and Lisa and Sherri and Terri (who are both female), just as Lisa unleashes Linguo, Lisa says "Linguo, fix his grammar for good." In this context, it should be "her" or "their."
Continuity mistake: Mob Rules: Whilst Marge is reading the newspaper in the opening cutscene, take note of the queue outside the Sequel Stop store. In the opening shot, they are standing outside the door. Then two shots later, they have disappeared. Then they reappear two shots after that. A couple seconds later, after Martin drives away in Ned's car, they have changed position and are now seen standing on the curb.
Continuity mistake: Mob Rules: When Quimby and the game producer are celebrating in the hot tub, in the first shot of them, the "MAYOR" sash is positioned so that the R is in the water. In the next shot, the sash is raised above the water.
