Collect all the cards in just one level to unlock the multi-player racing mini game.

Get the rocket car in front of one of the mansions. After you drive around and it gets
destroyed, make sure you remember where you left it. Then, look for one of the wrenches
and get it while out of a car. The rocket car will now return. You can smash it again and
keep getting money as many times as desired. Additionally, enable the "Invincibility" and
"Instant vehicle explosions" codes. Drive around town, hitting all the cars you can. You
will get $10 for every car that you explode. Note: This will cause a hit and run;
watch out for the cops.

At the main menu (the livingroom), go to the options screen. Hold down L1+R1, then press
SQUARE, SQUARE, SQUARE, TRIANGLE to activate the cheat. A horn will confirm entry.

Set the system date to January 1st to see various things in the game change to a New
Year's theme.

At the main menu (the livingroom), go to the options screen. Hold down L1+R1, then press
TRIANGLE, TRIANGLE, SQUARE, SQUARE to activate the cheat. A horn will confirm entry.

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 main menu (the livingroom), go to the options screen. Hold down L1+R1, then press
X, SQUARE, SQUARE, TRIANGLE to activate the cheat. A horn will confirm entry.

When you buy different costumes, in each level the character you select will react
differently when you allow him or her to remain idle. For example, choosing Bartman will
have Bart jump up and fly around for a few seconds.

At the options screen, hold L + R 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.

At the options screen, hold L + R and press Circle, X, Circle, Y. If you entered the code
correctly, you will hear the sound of a horn.

At the main menu (the livingroom), go to the options screen. Hold down L1+R1, then press
TRIANGLE, CIRCLE, TRIANGLE, CIRCLE to activate the cheat. A horn will confirm entry.

At the main menu (the livingroom), go to the options screen. Hold down L1+R1, then press
CIRCLE, CIRCLE, TRIANGLE, SQUARE to activate the cheat. A horn will confirm entry.

In Homer's last level there is an RC car hidden somewhere in the city. To find it go to
the Krusty Burger with the firetrucks next to it. Go to the second firetruck and jump on
the ladder and head for the firetruck's roof. There will be a mini RC car and a Bumblebee
camera. Destroy it and have fun with your mini RC car.

At the options screen, hold L + R and press Triangle(4). If you entered the code
correctly, you will hear the sound of a horn.

At the options screen, hold L + R and press X, Square(2), Triangle. If you entered the
code correctly, you will hear the sound of a horn.

At the main menu (the livingroom), go to the options screen. Hold down L1+R1, then press
TRIANGLE, TRIANGLE, TRIANGLE, TRIANGLE to activate the cheat. A horn will confirm entry.

At the main menu (the livingroom), go to the options screen. Hold down L1+R1, then press
CIRCLE, CIRCLE, CIRCLE, X to activate the cheat. A horn will confirm entry.

At the main menu (the livingroom), go to the options screen. Hold down L1+R1, then press
SQUARE, SQUARE, SQUARE, SQUARE to activate the cheat. A horn will confirm entry.

At the main menu (the livingroom), go to the options screen. Hold down L1+R1, then press
CIRCLE, X, CIRCLE, TRIANGLE to activate the cheat. A horn will confirm entry.

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

On Homer's first level, drive into the nuclear power plant. You will soon find a blocked
passage. Get out of your car, jump on the metal things, and double jump then press Square
to break it. Inside are more than 100 coins. When in, hit all of the chess people, get the
coins, and knock down the trees for a nice amount of coins. Note: This place is
huge and you cannot get your car in it.

In Homer's first level, drive to the power plant at the back of the town. Then, drive
through the power plant. Once you reach the end, keep going along the road and on the
left, in front of one of the big houses, you will find a blue and white rocket car that
you can drive around.

On level 6 with Bart, drive to Planet Hype (right at the beginning of the docks, there is
a revolving planet there) and go on the roof. The Pink Cadillac is crashed into the front
of the building in a little slot (facing the Squidport sign). Fall off the front of Planet
Hype, land on the Cadillac, get in, and drive it.