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.
Continuity mistake: Five Characters In Search Of An Author: After you have reached the interior of the mansion, try and run up a staircase as Bart. If you change the camera angle to an aerial shot and walk up the staircase, a chandelier will appear. If you do nothing the chandelier will just vanish from shot, despite not having moved.
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: Grand Theft Scratchy: The woman in blue gets crushed by the huge heart fixed onto the sweet store. This heart was never visible during the wide shot at the start of the cut scene.
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.
Revealing mistake: Invasion of the Yokel Snatchers: On the Wii version, just as Homer and Bart are about to be sucked into the spaceship, a car on the ground can be sticking through part of a damaged wall. As Homer and Bart are sucked into the ship, the car then lifts out of the ground and fades through the wall without damaging it.
Continuity mistake: Enter The Cheatrix: After Bart and Lisa break into Frink's basement, they discover a Rift Portal. The first shot shows the "DO NOT USE" sign a foot above Bart and Lisa's height. But as Bart walks into the portal, the sign is suddenly located at the same height as Bart.
Plot hole: Principal Skinner got arrested in "Bartman Begins" for getting the bullies to steal from the museum. Yet in "Mob Rules" (which takes place on that same day), he is seen outside Springfield Town Hall instead of being in jail. Marge did break Snake out of jail earlier in the level, but Skinner was never seen in jail.
Continuity mistake: Around The World In 80 Bites: In the ending cutscene, the losing contestants have to clean up. There's hardly any mess when they start cleaning. But the place is suddenly filled with mess when Comic Book Guy says "Less references, more mopping" to Willie.
Continuity mistake: Bartman Begins: After Bart flies onto the seal forming the bridge, a cutscene is then shown of Homer and Bart standing next to a glass wall witnessing the bullies stealing the artifacts. When it returns to the game, Homer and Bart are back on the seal.
Bug: The Land of Chocolate: To end the level, the game will need the player to smash all of the chocolate rabbits. If there are two left and you destroy one of them, the level will still end even with one of them still alive.
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: 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.
