Grand Theft Auto 3 Codes -

Tank (Rhino):
While playing the game, push (x6), , , , , , . You will see a message if you have entered the code correctly. The tank will appear in front of you. This may be repeated as many times as needed.

Flying car (low gravity):
While playing the game, push , , , , , , , . You will see a message if you have entered the code correctly. Accelerate and While playing the game, push to fly.

No wanted level:
While playing the game, push (x2), , , , , , , , . You will see a message if you have entered the code correctly. This code will be permanent if you save the game.

Higher wanted level:
While playing the game, push (x2), , , , , , , . You will see a message if you have entered the code correctly. This code will be permanent if you save the game.

Every weapon:
While playing the game, push (x2), , , , , , , , , , . You will see a message if you have entered the code correctly. Repeat this code for more ammunition.

Full health:
While playing the game, push (x2), , , , , , , , , , . You will see a message if you have entered the code correctly. 

Full armor:
While playing the game, push (x2), , , , , , , , , , . You will see a message if you have entered the code correctly.

More money:
While playing the game, push (x2), , , , , , , , , , . You will see a message if you have entered the code correctly.

Destroy all cars:
While playing the game, push , , , , , , , , , , , . You will see a message if you have entered the code correctly.

Better driving skills:
While playing the game, push , , , , , (x2), . You will see a message if you have entered the code correctly. Click the or to jump while driving. 

After this code is enabled, any time you roll your car, While playing the game, push + to flip back over. This will work as long as your car is not on its roof.

Increased gore:
While playing the game, push , , , , , , , , , . No confirmation message will appear. This code will be permanent if you save the game.

Fog:
While playing the game, push , , , (x2), , , . You will see a message if you have entered the code correctly.

Overcast skies:
While playing the game, push , , , (x2), , , . You will see a message if you have entered the code correctly.

Rain:
While playing the game, push , , , (x2), , , . You will see a message if you have entered the code correctly.

Normal weather:
While playing the game, push , , , (x2), , , . You will see a message if you have entered the code correctly.

Invisible cars:
While playing the game, push (x2), , , , , . You will see a message if you have entered the code correctly. Only your vehicle's wheels will be visible.

Faster game play:
While playing the game, push , , , , , , . You will see a message if you have entered the code correctly. Repeat this code to increase its effect.

Slower game play:
While playing the game, push , , , , , , . You will see a message if you have entered the code correctly. REMEMBER: This also continues the effect of an adrenaline pill.

Speed up time:
While playing the game, push (x3), (x5), , , , . You will see a message if you have entered the code correctly. Repeat this code to increase its effect.

Different costume:
While playing the game, push , , , , , , , , , . You will see a message if you have entered the code correctly.

Pedestrians riot:
While playing the game, push , , , , , , , , . You will see a message if you have entered the code correctly. This code will be permanent if you save the game.

All pedestrians have weapons:
While playing the game, push , , , , , , , . You will see a message if you have entered the code correctly. 

Pedestrians attack you:
While playing the game, push , , , , , , , , . You will see a message if you have entered the code correctly. This code will be permanent if you save the game.