When a World Tour is over and the name of an American city appears on screen, hold the joystick Down, then for George press Jump 3 times. For Lizzy press Punch 3 times. For Ralph press Kick 3 times. This will change all bad food to good food during the next stage.
Beware of Rubber Duckies
If you find a rubber ducky, don't eat it. Doing so will call the fighter planes early.
Change Character Colors
To change the colors of George, Lizzie or Ralph go to the characters select and press UP or DOWN on the controller stick or the d-pad.
Double Points
You can double the points you get in certain cities if you press the character button on the screen that introduces the next city. The buttons are:
George Jump
Lizzie Punch
Ralph Kick
These are the cities that are affected by this.
Casablanca
Kiev
Kodiac
London
Moab
Nashville
Rio de Janerio
Washington DC
You also get these affects if you pick up a calculator in any city.
Hidden Cities
To access the hidden stages below, at the city screen, rapidly press the button indicated for the character you're playing: Punch for Lizzie, Kick for Ralph, and Jump for George. If you pressed the button quickly enough, you'll warp to the following stages.
Atlanta - Suburbia
Casablanca - Palace
Fairbanks - Underworld
Kiev - Exchange
Kodiak - Snow City
London - Big Ben
Louisville - Scumlabs Bioweapons
Moab - Game Refuge
Nashville - Downtown
Phoenix - Area 69
Rio de Janeiro - Sunset City
San Diego - Caleb's City
Washington D.C. - The Capitol
Level Select
At the character selection screen hold L and all four C- buttons. Keep holding them until you hear a noise, then start the game. When the screen that shows the next city is displayed, use UP and DOWN to change your country or LEFT and RIGHT to change your city. Even the bonus levels are included.
Monster Allergies
All monsters have allergies. When your monster eats the thing he or she's allergic to he or she will sneeze and it will blow down the building you are on.
George is allergic to dogs.
Lizzy is allergic to birds.
Ralph is allergic to cats.
Play as T-Rex
Beat all the levels, then start a new game. Highlight Ralph on the character select screen, hold Z and press L, R, L, R. If you hear people scream, the code was entered correctly.
Play as V.E.R.N
To play as V.E.R.N. (Violent Enraged Radioactive Nemisis) search for a Scum Lab facility. Eat the toxic waste barrels and you will be transformed into V.E.R.N. for the rest of the stage. V.E.R.N can fly, throws fireballs and has super strength.
Stealin' Da Food!
This could possibly the hardest cheat to do on "Rampage World Tour." First, start a game with one of your friends/relatives. When you enter the level, look for a "Tourist Trap." When you find one, make sure your friend/relative gets it. After they eat the first 2 portions of the "Tourist Trap" and are throwing up the final portion, run at them and do a flying kick(A+C-Down). Then, the people that were thrown into the air should fly away your friend/relative's mouth and land safely on the ground. Now you get to eat them!
Tank Ride and Plane Ride
Jump on tanks to get a free ride. You can control the way the tank is moving. The tank will then shoot elsewhere. In a short while, the tank will explode and you will be shot into the air. You can also jump onto the low flying planes and use them to attack the buildings and other players.