Continuity mistake: Big Super Happy Fun Fun Game: After Mr. Sparkle tidies up the town, Milhouse shrinks down to regular size and his crown falls off his head. The crown is rolling away from Milhouse and stops slightly behind him on his left. In the next shot, the crown is suddenly far behind him.
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 is reading the manual, there is a 360 degree panning shot of him reading. When the shot is on the road behind him, there is a museum in the background and a sign saying "Springfield Museum of Natural History." A few seconds later, when Homer arrives, the sign in front of the museum is still there, but the name has vanished from the sign. When Homer and Bart climb into the sewer, the name has suddenly reappeared on the sign.
Continuity mistake: Bartman Begins: When Homer sees Bart in the Bartman costume, asking him what's with the broody getup, the shotgun he is holding is sideways away from his face. The shot cuts to a closer shot of Homer, and the shotgun is still away from his face, but in the next shot, the shotgun is suddenly upright.
Plot hole: Bartman Begins: When Jimbo reveals to Bart that Skinner hired them to rob the museum, Bart says "Principal Skinner?" and looks to his right and sees Principal Skinner standing there. The problem in this scenario is that there is nothing there to make Bart look towards the right. Skinner was never heard approaching nor did he ever state he was there before Bart looked and no-one else in the scene even told Bart that Skinner was approaching.
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.
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.
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 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: Bartman Begins: When Homer shows Bart the BB gun and swimsuit magazines, there is a black manhole cover located on the road behind him. When Homer and Bart move the manhole cover a few seconds later, the manhole cover is suddenly grey.
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: Bartman Begins: After Bart has bought the Grand Theft Scratchy game, he begins to walk away from the store. From the exterior shot, he is shown walking past the window. The shot then changes and Bart is suddenly yet to walk by the window.
Continuity mistake: Bartman Begins: After Bart has stopped Jimbo, Jimbo is telling him to stop freaking him out with his abilities. As he says this, beside Jimbo is a dinosaur coccyx positioned on a purple part of the floor. Jimbo then tells him they are henchmen and the coccyx has moved to a blue part of the floor.
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.
Revealing mistake: Bartman Begins: After Bart has pulled the lever to open the door to the second dinosaur exhibit, travel back through that opened door and back through the exit door to the first dinosaur exhibit. There is also another positioned directly behind the entrance door. There are several frames at this moment where the door will just vanish completely.
Continuity mistake: Game Over: When the Simpsons meet God, the Simpsons go from looking at God to looking 90° in the opposite direction between shots.
Continuity mistake: Game Over: On the Wii and PSP versions, just as the opening cutscene finishes, Shakespeare is standing atop the gates to heaven, but as soon as the level starts, Shakespeare is standing on the ground.
Continuity mistake: Five Characters In Search Of An Author: Maggie suddenly appears on Marge's baby carrier as soon as the game engine start to crumble. She nor the baby carrier attached to Marge was never visible at any point before this.
Continuity mistake: Five Characters In Search Of An Author: When Matt Groening unveils the Game Engine self destruct button, the painting hiding it changes position in relation to the self destruct button between shots.
