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.
Continuity mistake: Lisa The Tree Hugger: Lisa takes the The Simpsons Game manual off Bart. After Bart says "Can we skip this level?", Lisa starts talking to Bart and the manual has disappeared. There was also nowhere for Lisa to put the manual.
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.
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: 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: 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: 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.
Continuity mistake: The Land of Chocolate: When Homer wakes up from his dream, there is one wrapper on his chest and as he goes to stand up, there are no wrappers visible on his abdomen. In the next shot, a wrapper has suddenly appeared.
Continuity mistake: Game Over: When the Simpsons and game characters are back at the Simpson household, the computer that they were using in the level "Bargain Bin" earlier on is no longer in front of the couch. The Simpsons had been in the game engine the entire time so they couldn't have moved it.
Continuity mistake: Mob Rules: When Springfield is being invaded, the Simpsons are in their home, with Marge and Lisa in the doorway and Homer hiding behind the door. Lisa then says "We've gotta do something", the entire doorway is visible in frame and Homer has suddenly vanished.
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.
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: Big Super Happy Fun Fun Game: When Milhouse is about to give the key card to Homer and Lisa, he extends his arm to hand it to them and puts his arm in a bent position. In the next shot, his arm is fully extended, with no visible bend.
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: Big Super Happy Fun Fun Game: When Homer and Lisa insert the three Sparklemon into the coin slots, Mr. Sparkle rises and the area where Homer and Lisa are standing and where the coin slots are located can be seen in the shot of Mr. Sparkle rising out of the giant toilet. They are seen standing on the left hand side of the giant toilet, but when Mr. Sparkle "cleans" the village, the giant toilet can be seen in shot, but Homer and Lisa are nowhere in sight.
Continuity mistake: Big Super Happy Fun Fun Game: In the opening shot of the ending cutscene, an overview shot is of Homer and Lisa standing in front of the huge toilet. They are standing in some mud in the overview angle, but when the shot cuts to a closet angle, they are suddenly standing on the ground, away from the mud.
Continuity mistake: Big Super Happy Fun Fun Game: When Homer says to Milhouse "Hey, the girl said she's not interested. Beat it loser", Lisa is standing next to Homer, slightly behind him, but in the next shot, Lisa is suddenly standing slightly in front of Homer.
Continuity mistake: Big Super Happy Fun Fun Game: When Homer and Lisa are talking with Milhouse in the opening cutscene, Homer and Lisa are standing on the ground about a few feet away from the ocean, but in the shot where Milhouse says "But I'm so huge", Homer and Lisa are suddenly a much further distance from the ocean.
Continuity mistake: Big Super Happy Fun Fun Game: After Milhouse emerges from the water, Lisa says to him, "Knock it off Milhouse, we know it's you" and she has her right hand raised pointing at him. When the shot cuts, her hands are at her side.
Continuity mistake: The Land of Chocolate: After Homer runs with the three bunnies, he stops and it rains chocolate balls into his hands. As they land in his hand, there are not that many raining, but in the next shot, there is suddenly a large amount, way more than what was shown landing in his hands.
