Bug: Lisa the Treehugger. Xbox 360. In the last map it can occur that the timer to rescue Carl and Lenny drops down to 20 seconds after a few unsuccessful attempts, thus breaking the game.
Bug: Game Over: When battling God, several dead people charge after you and you have to jump onto each of the arrow keys that the dead people walk onto in order to electrocute them. Sometimes during this (mostly during round 3), if you jump onto the arrow key the dead person runs onto, the arrow key may not electrocute the dead person running onto it.
Bug: Medal of Homer: After Homer runs out of the mill exit, the huge spinning wheel is shown. If Homer jumps onto it, you will end up stuck floating one metre above the spinning wheel in the air.
Bug: NeverQuest: At the first point during this level, you will have to take down The Dragon (Patty and Selma). At various points, she will hold her position behind a massive gate and Homer will have to use his Homer Ball power to attack The Dragon. If The Dragon begins to leave and you attack with Homer Ball and hit The Dragon's tail as it leaves, you will just fade through the tail and The Dragon won't lose any lives.
Bug: Day of the Dolphin: In the underground aquarium scene where you have to defeat Snorky, switch to Lisa and use her Hand Of Buddha power to move the jellyfish and place them on the hexagon-shaped grey platforms on the left corner on the screen. If you place one of the jellyfish on the platform and drop the other one, the jellyfish you dropped cannot be picked up a second time. It will just be stuck on the ground.
Bug: Maggie has an ability where she can crawl through ventilation systems and turn on a switch by spitting her pacifier at it. If not directly facing the switch, the pacifier may miss the switch by an inch or two, but the switch will still get turned on anyways.
Bug: Mob Rules: On the Wii version, after destroying the billboard on construction site, (the one after Grandpa Simpson becomes part of the mob), all of the debris will pass through the ground when it collapses.
Bug: If the player puts Bart in the living room, and Marge walks into the room and exits, she will walk into the wall before exiting and keep trying to walk for a few seconds.
Bug: Lisa The Tree Hugger: When Lisa is jumping through the animals and logs in the water, if she misses a jump and begins to fall into the water, a bug might occur where she ends up back at the starting point. A jump onto a turtle. After missing, instead of ending up in the water, she might end up back where she started.
Bug: Lisa The Tree Hugger: At one point, Lisa will have to use her Buddha hand ability to place three waste buckets onto a conveyor belt. After two of those buckets go in, the machine that the conveyor belt leads to will explode. The third one will remain on the conveyor belt but will disappear when it reaches the destroyed machine.
Bug: Try and walk around the car in the Simpson garage from the right. After walking past the boot, it won't let you walk around the left side of the car.
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.