At the options screen, hold L1 + R1 and press Square(3), Triangle. If you entered the code correctly, you will hear the sound of a horn. Sound the horn to jump extra high. At the options screen, hold L1 + R1 and press Triangle(4). If you entered the code correctly, you will hear the sound of a horn. Set the system date to December 25th to see various things in the game change to a Christmas theme. At the options screen, hold L1 + R1 and press Triangle(2), Circle, Square. If you entered the code correctly, you will hear the sound of a horn. At the options screen, hold L1 + R1 and press X, Square(2), Triangle. If you entered the code correctly, you will hear the sound of a horn.

Set the system date to the last hursday in November to see various things in the game change to a Thanksgiving theme. At the options screen, hold L1 + R1 and press Triangle, Circle, Triangle, Circle. If you entered the code correctly, you will hear the sound of a horn. At the options screen, hold L1 + R1 and press Triangle, X, Triangle, X. If you entered the code correctly, you will hear the sound of a horn. You can find an ATV or Quad to ride at the trailer park in Homer’s and Marge’s levels. It is between two trailers at the far end. Also in Marge’s level, go to the trailer park short cut then go near the end of it. You will see a card floating on the top of the trailer. Go on the left side of it and you will see a blue ATV. At the options screen, hold L1 + R1 and press Triangle(2), Square(2). If you entered the code correctly, you will hear the sound of a horn.At the options screen, hold L1 + R1 and press Circle, X, Circle, Y. If you entered the code correctly, you will hear the sound of a horn.

At the options screen, hold L1 + R1 and press X, Circle, X, Circle. If you entered the code correctly, you will hear the sound of a horn. Note: You must have first completed all missions.In Bart’s first level, go to the entrance/exit to the highway. Where there is a split road, go to the right and up the stairs. You will see a monorail. Go to the front car and press Triangle to drive the first monorail car around.

At the options screen, hold L1 + R1 and press Circle(3), X. If you entered the code correctly, you will hear the sound of a horn. At the options screen, hold L1 + R1 and press Square(4). If you entered the code correctly, you will hear the sound of a horn.