Rampage World Tour

Hidden Level:
Using George, punch the sign on the first level that changes pictures while it is on a western scene.
When you get to San Diego, at the screen where it says what level you're on, rapidly press the punch button.
A little box should then say "Code Correct." The hidden level's name will replace Carson City.

Change Character Colors:
At the Character Select screen, press either Up or Down on the d-pad or the control stick.

Play as V.E.R.N:
Eat the toxic waste barrels near a Scum Lab facility and you will be transformed into V.E.R.N. (Violent Enraged Radioactive Nemisis) for the rest of the stage.

Hidden Cities:
On the screen that shows your next city, rapidly punch the button corrosponding to your character:
George - Jump
Lizzie - Punch
Ralph - Kick

Allergies:
When a monster eats something it is allergic to, it will sneeze and knock down the building is on.
Here are their allergies:
George - Dogs
Lizzie - Birds
Ralph - Cats

Ride Tanks:
If you jump on a tank, you can ride it control the direction it moves. After a short while, however, the tank will explode and thrust you into the air.

Ride UFOs:
If you jump on a UFO, you can control which direction it moves. It will still fire, so you will be able to destroy building with it. The UFO will disappear after a while.

Bad Food, Good Food:
When a World Tour is over and the name of an American city appears on screen, hold Down and, if you're George, press Jump three times; if you're Lizzy, punch three times, or if you're Ralph, Kick three times. This code will change bad food to health-boosting good food.

Level Skip:
If you're about to enter Cleveland, Fargo, Oklahoma City or Reno, and you're George, press Jump, Punch and Kick;
if you're Lizzy, press Punch, Kick and Jump; if you're Ralph, press Kick, Jump and Punch.
You must enter the code before the name of the city fades and the stage begins!
If you enter this code correctly, you'll skip anywhere from seven to ten days ahead.

Bad Food Begone:
If you're about to enter Casablanca, Kiev, Kodiak, London, Moab, Nashville, Rio de Janeiro or Washington D.C., press Jump if you're George; Punch if you're Lizzy, or Kick if you're Ralph. If you press the correct button before the city name fades, all the bad food in the city will disappear.

City Select:
On the main menu or Character Select screen, hold the L Button and all C Buttons until you hear a tone.
Begin a game and go to the screen that shows the city and the day.
With either the Control Pad or Control Stick, press Up or Down to select a country, and Left or Right to select a city.