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: Bartman Begins: Whilst Bart is reading The Simpsons Game manual, the shot is panning around him. In the background, there is a lamp post visible on the corner of the street. When Homer enters the scene later on, the lamp post has changed design.
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.
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: 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: 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 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: 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.
