Grand Theft Auto: The Trilogy Cheats

You need a saved game for this. Start a new game, and after the beginning cutscene load your other game. You'll have everything, but you'll still be wearing a prisoner outfit.

Get into a taxi, hold down the R3 button. Exit the taxi and step into another car, release the R3 button and you should be able to do taxi mission in the car you are currently in.

Take an ambulance to the top of Marco's Bistro in the St. Mark's area. It takes a bit of work, but you should be able to get it up the stairs eventually. Now, slowly back it up so that it almost rolls over the edge of the little wall, but not all the way. Now (quickly) find a car on the street and bring it in front of the ambulance so that you can jump on the ambulance's hood and then roof. While on the roof, jump towards the brick wall of the building. You should end up on an invisible ledge or roof and you can run around quite a large area before the invisible ground ends. Tip: Use a gun that you can aim manually to shoot the "ground" in front of you a bit. If there are sparks, then it's safe to walk, and if there aren't any than you will fall if you try to walk there.

Press the START button, go to the Audio menu, select the station you want to reset, then press the START button and press left or right to change the menu while the pause menu dissapears. For some reason, the radio station you selected will reset. You will notice the station track reset if you are in a car.

Go to any garage that can fit two or more cars in. When It is full, get another car right up next to the door, and get out. Press triangle as the door is going up, and hit X fast to get the car in. You might have to move the cars in the garage around, but it's possible to get up to 6 cars in any given garage.

To exploit this glitch it's just a matter of putting the fire out as the clock is going to hit 0. If done correctly, the timer will disappear allowing infinite time to cruise to the next fire.

If you want to get to the third Island and haven't earned it, you can ''fall'' into the underground passage. You'll need the Car Handling Cheat entered (R1 L1 R2 L1 left R1 R1 Triangle) and an esperanto. You must have an Esperanto - it's the only car that will jump high enough. First, get to the hospital in Staunton Island. then, go to the parking lot and go as fast as you can towards the Hospital. Make sure that you are on the left side of it... It's hard to do it without doing that. Jump onto the platform above the Hospital ''Entrance'' and go slowly straight to the square-looking wall. Go into it turning right, and go forward. You should fall out of the world and land in the underground passage. Turn right and go quicly to the beauty of Shoreside Vale. If you hit a blue wall, turn around and go.

Enter the full health cheat (R2, R2, L1, R1, Left, Down, Right, Up, Left, Down, Right, Up) while in a vehicle and that vehicle's damage will be repaired. The visual damage will remain but the vehicle's condition will be as if it were new.

When you're doing the mission on Staunton Island for Ray Machowski called ''Gone Fishing'', you're supposed to kill the guy on the boat. If you stand on the shore with your sniper rifle and shoot him as he goes by, he may turn the wrong direction and beach himself.

If you shoot him as he's standing on the shore, the boat remains. Press the Triangle button as you would to get into any other boat, and press the Square button like you're reversing. The boat won't go too far, but if you keep holding the Square button down, eventually you can get back into the water, assuming the boat doesn't flip.

The boat handles REALLY well, goes pretty fast, and goes by the title of ''GHOST Missing''. If you dock it and shoot it to make it explode, it does explode, but it still remains as though it's new. You can't really see yourself inside the boat, as it was never meant for you to drive anyways.

Little thing, but it's fun.

By using the ''Jumping Cars'' trick, you can access other parts of the city you can't in the beginning of the game, from the broken down bridges. Just go to the bridge you want to cross, and use the ''Jumping Cars'' trick when your just about to hit the edge of the bridge. You will then cross the bridge safely (might take a try or two), and be able to try out some new city life!

At the first island drive your car towards the tunnel that blocks off the third and second island. Park the car right next to the blue wall and blow it up. You should be blown through into the third or second island.

Near the Traid Gang area, there is a subway entrance that is blocked off. It has stairs leading down to it. There is a ramp that causes you to fly over the small gap. But if you drive up very slowly then you will fall of the ramp and land on the stairs. If you done this correctly then you should go through the cage. You will now be in the subway. You will now be able to either take a train to another island or drive your car to another island through the subway. This glitch works well with a Police car or a Taxi.

Start a Vigilante mission. Once you get near the suspect's car. Hit pause, and then un-pause it. The suspect will jump out of the car for no reason. Now you can run them over.

Get into a car. Drive in front of the desired car (to keep it front driving away) that you would like to drive after it's been blown up. THE CAR MUST HAVE SOMEONE IN IT. Walk up to the driver's side door. Enter the ''Blow up all cars'' code. While entering the code, Mr. GTA (or whatever his name is) will pull the driver out of the car and then get into it as it's blowing up and somehow he will not die. But as soon as you are in the car, enter the Health Code to extinguish the flame. It might not work the first time, so keep trying and eventually it will work.

Just set your console and the game language to English, this allows you to play the game without censorship.
Now you can also hit opponents while they are on the ground, a feature that was removed from the German version.