Go to the OPTIONS screen, select PASSWORD, then enter R1 R2 L1 L1 X O.

Go to the OPTIONS screen, select PASSWORD, then enter Square, X, O, Triangle, R1, R2.

Go to the OPTIONS screen, select PASSWORD, then enter L1, Triangle, R2, Triangle, Triangle, R1.

Go to the OPTIONS screen, select PASSWORD, then enter R1, Square, X, Square, L2, O.

To access the Funtopia level, go to the OPTIONS screen and select PASSWORD, then enter X, O, L2, X, Square, L1.

Go to the OPTIONS screen, select PASSWORD, then enter R1, Triangle, R1, Triangle, L1, Square.

Go to the OPTIONS screen, select PASSWORD, then enter Triangle, L1, R1, X, L2, L2. Goliath is the steam roller who appears in Area 51.

Go to the OPTIONS screen, select PASSWORD, then enter Circle, Square, R2, X, Triangle, R2.

Go to the PASSWORD screen and enter the password O, R2, R1, Square, L1, R2. Following every challenge you must reenter this code.

Go to the PASSWORD screen and enter the password Square, Triangle, Circle, Circle, R2, R2.

Go to the PASSWORD screen and enter the password O, O, L2, L1, Triangle, Triangle.

Look for the light in Area 51. When it says "420" go to the light beam. Your car will be beamed up to a bonus stage with lots of powerups and weapons.

For a special movie, go to the OPTIONS screen, choose PASSWORD then enter the password Square, Square, Circle, Circle, Triangle, Triangle.

Once fighting in Quake-A-Roni, you may see a building that seems to be tilting in one direction.  Fire a few  missiles at it and watch it blow.  Once that is over, you will notice that a building near has a hole in it.  Now drive through, it's not much, just a few weapon pickups and one monument to blow up.

For more powerups, go to the PASSWORD screen and enter the password L1, L2, Circle, L1, R1, Square.

After entering the "Enable Cheats" code press and hold L1 + R1, then press Up, Down, Left, Right.

Hold L1 + R1 + R2 + Select when you begin the level.

After entering the "Enable Cheats" code switch to the stinger weapon and hold Triangle + L2 + L1 + R1 + Left.

At the password screen enter Triangle, Square, R2, X, Triangle, R2. Big Daddy can only be used in one-player challenge mode.

When you are in the Area 51 level find the remote bombs and upgrade them to the highest level. Then go to the corner where you see a crashed flying saucer and drop the upgraded remote bomb behind it but don't detonate it yet. Take the teleporter to the moon and detonate the bomb. There will be a big explosion and the Earth will blow up. Then fragments of Earth will hit the moon and destroy that too and you will be left floating in space and are forced to restart the game. When you start a new game you will automatically have god mode enabled.

Go to to the password screen and enter X,square,O,L1,L2,square.

To increase armor, enter R1, Triangle, R1, Triangle, L1, Square as a password.

To power-up your weapons, hold R1 + R2 + L1 and press DOWN during a game.

To Change the music just pause the game, take the CD out and put your favorite music CD. You will need to put the game CD back in when you go to a new level

NOTE: Gamesages does not recommend taking a CD out of your Playstation unless the power is off, Try this trick AT YOUR OWN RISK.

To activate all but the bonus car cheat, hold R1 + R2 + L1 and press UP, DOWN, LEFT, RIGHT during the game.

For unlimited ammunition, hold R1 + R2 + L1 and press UP, DOWN, LEFT, RIGHT during a game.