Codes for Grand Theft Auto Liberty City Stories:
Enter these codes during gameplay

All Vehicles Chrome Plated - TRIANGLE, R1, L1, DOWN, DOWN, R1, R1, TRIANGLE
Change Bike Tire Size - CIRCLE, RIGHT, X, UP, RIGHT, X, L1, SQUARE
Upside Down Gameplay - DOWN, DOWN, DOWN, X, X, SQUARE, R1, L1
Have People Follow You - DOWN, DOWN, DOWN, TRIANGLE, TRIANGLE, CIRCLE, L1, R1
Display Game Credits - L1, R1, L1, R1, UP, DOWN, L1, R1
Bobble Head World - DOWN, DOWN, DOWN, CIRCLE, CIRCLE, X, L1, R1
Aggressive Drivers - SQUARE, SQUARE, R1, X, X, L1, CIRCLE, CIRCLE
All Green Lights - TRIANGLE, TRIANGLE, R1, SQUARE, SQUARE, L1, X, X
Commit Suicide - L1, DOWN, LEFT, R1, X, CIRCLE, UP, TRIANGLE
Perfect Traction - L1, UP, LEFT, R1, TRIANGLE, CIRCLE, DOWN, X
Slower Gameplay - R1, TRIANGLE, X, R1, SQUARE, CIRCLE, LEFT, RIGHT
Peds Have Weapons - R1, R1, L1, R1, R1, L1, RIGHT, CIRCLE
Faster Gameplay - R1, R1, L1, R1, R1, L1, DOWN, X
Sunny Weather - L1, L1, CIRCLE, R1, R1, SQUARE, TRIANGLE, X
Clear Weather - UP, DOWN, CIRCLE, UP, DOWN, SQUARE, L1, R1
Peds Attack You - L1, L1, R1, L1, L1, R1, UP, TRIANGLE
Peds Riot - L1, L1, R1, L1, L1, R1, LEFT, SQUARE
Destroy All Cars - L1, L1, LEFT, L1, L1, RIGHT, X, SQUARE
Faster Clock - L1, L1, LEFT, L1, L1, RIGHT, CIRCLE, X
Spawn Rhino - L1, L1, LEFT, L1, L1, RIGHT, TRIANGLE, CIRCLE
Rainy Weather - UP, DOWN, SQUARE, UP, DOWN, CIRCLE, L1, R1
Foggy Weather - UP, DOWN, TRIANGLE, UP, DOWN, X, L1, R1
Overcast Weather - UP, DOWN, X, UP, DOWN, TRIANGLE, L1, R1
Money Cheat ($250,000) - L1, R1, TRIANGLE, L1, R1, CIRCLE, L1, R1
Full Armor (Blue Bar) - L1, R1, CIRCLE, L1, R1, X, L1, R1
Full Health (Red Bar) - L1, R1, X, L1, R1, SQUARE, L1, R1
Weapon set 1 - UP, SQUARE, SQUARE, DOWN, LEFT, SQUARE, SQUARE, RIGHT
Weapon set 2 - UP, CIRCLE, CIRCLE, DOWN, LEFT, CIRCLE, CIRCLE, RIGHT
Weapon set 3 - UP, X, X, DOWN, LEFT, X, X, RIGHT
Raise Wanted Level - L1, R1, SQUARE, L1, R1, TRIANGLE, L1, R1
Never Wanted - L1, L1, TRIANGLE, R1, R1, X, SQUARE, CIRCLE
Cars Drive On Water - CIRCLE, X, DOWN, CIRCLE, X, UP, L1, L1
White Cars - X, X, R1, CIRCLE, CIRCLE, L1, TRIANGLE, TRIANGLE
Black Cars - CIRCLE, CIRCLE, R1, TRIANGLE, TRIANGLE, L1, SQUARE, SQUARE
Raise Media Attention - L1, UP, RIGHT, R1, TRIANGLE, SQUARE, DOWN, X
Spawn Trashmaster - TRIANGLE, CIRCLE, DOWN, TRIANGLE, CIRCLE, UP, L1, L1
Random Ped Outfit - L1, L1, LEFT, L1, L1, RIGHT, SQUARE, TRIANGLE
Unlock multiplayer skins - Triangle, Triangle, Triangle, Up, Up, Right, L, R Upside Up UP, UP, UP, TRIANGLE, TRIANGLE, CIRCLE, L1, R1

Unlock multiplayer items in Grand Theft Auto Liberty City Stories:
Enter the code during gameplay.
All cars and pedestrians unlocked for all 3 islands in multi-player - up up up triangle triangle circle Left Right

Moon Increases in Size:
When it's night-time, take out your Sniper Rifle and look for the Moon in the sky. Zoom in and shoot the Moon. The Moon will increase in size the more you shoot it and then go back to it's original small state when you shot it enough times.

Smiley face:
On Statunton Island there is a parking lot on the top northeast corner. Look for a white staircase inbetween the parking garage and the parking lot entraces on the southside. Go up the staircase and jump on the short cement railing. Then turn east and jump up on the roof over looking the parking lot (Liberty City Tree Building) and run across the roof to the other side where you will see a courtyard. Jump down into the courtyard and run to the very end of the courtyard to the northwest. Then on a wall at the end of a courtyard has a white picture of a smiley face and says 'Hello Again'. This is the same spot where in Grand Theft Auto III, where a sign says "You arn't supposed to be here."

Bulletproof Stretch in Grand Theft Auto Liberty City Stories:
You must be on Staunton Island and on the mission "Search and Rescue" which is given to you by Sal over the pay phone. Go pick up the limo from Sal's garage, then drive the limo to YOUR garage. Do NOT go to the yellow marker. Go straight from the Sal's garage to yours. After the limo is in your garage, fail the mission (die or blow up the limo while it is in your garage) and then the Bulletproof Stretch is yours. This works with other mission vehicles as well.

Bullet proof PCJ-600 :
In the mission "Biker Heat", when you chase down Wayne, kill him WHILE HE'S ON THE BIKE (he cannot fall off the bike or it will not be bullet-proof anymore), steal it, and then save it for a bullet-proof PCJ.

Keep more than one vehicle in your garage:
Normaly you can only keep one vehicle in your garage due to the fact that if one vehicle is being stored the door will not open for the one your in, so get out of your car (a bike works easier) and push it next to the garage doors, when you get close enough it will open and let you push your vehicle into the garage. This is very handy when you want both a car and a bike at your fingertips.

Near Infinite Sprint Trick:
Just tap default X button to sprint instead of holding it down. You cycle the sprint so it's like you never start. This can be done at any time; whether during a mission or exploration.

Helicopter With Wheels:
Take a helicoptor to the Pay 'n Spray in Portland and try to squeeze it in so the door will close without blowing up the helicoptor. When the door reopens there will be wheels on the helicopter.

Double Ammunition:
It is possible to duplicate any amount of ammunition for a specific gun. This happens during any missions or odd jobs where you are driven by someone and have to shoot things with a crosshair and some type of automatic gun with unlimited ammo. Just have the gun in your inventory that you want to duplicate ammo selected before you start the mission or odd job. Certain missions where there is more than just the shooting part only require having the gun selected when you go into the shooting part of the mission. When the mission is completed or failed you should notice the selected gun has twice the initial ammo.

Infinite Time for Fires in Fire Truck Missions:
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.

Hint:
to do a burnout on cars press the gas and brake at > the same time.
submitted by 2pac - February 17, 2007