GTA IV

GTA IV

Random Text Cheat Codes

Type/enter these codes during gameplay. The set code can be uppercase or lowercase.

Cheat Effect

YLTEICZ Aggressive Drivers
LLQPFBN Pink traffic
IOWDLAC Black traffic
AFSNMSMW Boats fly
BTCDBCB Fat
JYSDSOD Max Muscle
KVGYZQK Skinny
ASBHGRB Elvis is Everywhere
BGLUAWML Peds Attack You With Weapons, Rocket Launcher
AEZAKMI Never Wanted
CIKGCGX Beach Party
MROEMZH Gang Members Everywhere
MROEMZH Gangs Control the Streets
AFPHULTL Ninja Theme
BEKKNQV Slut Magnet
BGKGTJH Traffic is Cheap Cars
GUSNHDE Traffic is Fast Cars
RIPAZHA Cars Fly
JHJOECW Huge Bunny Hop
JUMPJET Spawn Hydra
KGGGDKP Spawn Vortex Hovercraft
JCNRUAD Smash n' Boom
COXEFGU All Cars Have Nitro
BSXSGGC Cars Float Away When Hit
XJVSNAJ Always Midnight
OFVIAC Orange Sky 21:00
MGHXYRM Thunderstorm
CWJXUOC Sandstorm
LFGMHAL Mega Jump
BAGUVIX Large Health Boost
CVWKXAM Infinite Oxygen
AIYPWZQP Have Parachute
YECGAA Have Jetpack
LJSPQK Six Star Wanted Level
CFVFGMJ Foggy Weather
YSOHNUL Faster Clock
PPGWJHT Faster Gameplay
LIYOAAY Slower Gameplay
AJLOJYQY Peds Attack Each Other, Get Golf Club
BAGOWPG Have a bounty on your head
FOOOXFT Everyone is armed
AIWPRTON Spawn Rhino
CQZIJMB Spawn Bloodring Banger
JQNTDMH Spawn Rancher
PDNEJOH Spawn Racecar
VPJTQWV Spawn Racecar
AQTBCODX Spawn Romero
KRIJEBR Spawn Stretch
UBHYZHQ Spawn Trashmaster
RZHSUEW Spawn Caddy
CPKTNWT Blow Up All Cars
XICWMD Invisible car
PGGOMOY Perfect Handling
SZCMAWO Suicide
ZEIIVG All green lights
LXGIWYL Weapon Set 1, Thug's Tools
KJKSZPJ Weapon Set 2, Professional Tools
UZUMYMW Weapon Set 3, Nutter Tools
HESOYAM Health, Armor, $250k
OSRBLHH Increase Wanted Level Two Stars
ASNAEB Clear Wanted Level
AFZLLQLL Sunny Weather
ICIKPYH Very Sunny Weather
ALNSFMZO Overcast Weather
AUIFRVQS Rainy Weather
IAVENJQ Mega Punch
AEDUWNV Never Get Hungry
IOJUFZN Riot Mode
PRIEBJ Funhouse Theme
MUNASEF Adrenaline Mode
WANRLTW Infinite Ammo, No Reload
OUIQDMW Full Weapon Aiming While Driving
THGLOJ Reduced Traffic
FVTMNBZ Traffic is Country Vehicles
SJMAHPE Recruit Anyone (9mm)
BMTPWHR Country Vehicles and Peds, Get Born 2 Truck Outfit
ZSOXFSQ Recruit Anyone (Rockets)
OGXSDAG Max Respect
EHIBXQS Max Sex Appeal
VKYPQCF Taxis Have Nitrous, L3 Bunny Hop
NCSGDAG Hitman In All Weapon Stats
OHDUDE Spawn Hunter
AKJJYGLC Spawn Quad
AMOMHRER Spawn Tanker Truck
EEGCYXT Spawn Dozer
URKQSRK Spawn Stunt Plane
AGBDLCID Spawn Monster
IFIRSTDOZ Never Wanted
CAINEMVHZC Infinite Health, except for explosions and falls
allcarsgoboom All Cars Explode

Plain Text Cheat Codes

Type these codes during gameplay. The set code can be uppercase or lowercase.

Cheat Effect

Testeducationalskills No Wanted Level
STINGLIKEABEE Mega Punch
MONSTERMASH Spawn Monster
SPEEDFREAK All Cars Have Nitro
STATEOFEMERGENCY Chaos Mode
JUMPJET Spawn Hydra
BUBBLECARS Cars Float Away When Hit
KANGAROO Mega Jump
SCOTTISHSUMMER Thunderstorm
NIGHTPROWLER Always Midnight
BRINGITON Six Star Wanted Level
ROCKETMAN Have Jetpack
CRAZYTOWN Funhouse Theme
FULLCLIP Infinite Ammo, No Reload
GHOSTTOWN Reduced Traffic
ROCKETMAYHEM Recruit Anyone (Rockets)
WORSHIPME Max Respect
PROFESSIONALKILLER Hitman In All Weapon Stats
NATURALTALENT Max All Vehicle Skill Stats
ITSALLBULL Spawn Dozer
FLYINGTOSTUNT Spawn Stunt Plane
FOURWHEELFUN Spawn Quad
OHDUDE Spawn Hunter
CJPHONEHOME Huge Bunny Hop
NINJATOWN Ninja Theme
EVERYONEISPOOR Traffic is Cheap Cars
EVERYONEISRICH Traffic is Fast Cars
BIFBUZZ Gangs Control the Streets
ONLYHOMIESALLOWED Gang Members Everywhere
BUFFMEUP Max Muscle
BLUESUEDESHOES Elvis is Everywhere
GOODBYECRUELWORLD Suicide
FLYINGFISH Boats Fly
WHEELSONLYPLEASE Invisible car
STICKLIKEGLUE Perfect Handling
TRUEGRIME Spawn Trashmaster
CELEBRITYSTATUS Spawn Stretch
WHERESTHEFUNERAL Spawn Romero
HELLOLADIES Max Sex Appeal
VROCKPOKEY Spawn Racecar
SLOWITDOWN Slower Gameplay
SPEEDITUP Faster Gameplay
TOODAMNHOT Very Sunny Weather
PLEASANTLYWARM Sunny Weather
PROFESSIONALSKIT Weapon Set 2, Professional Tools

GTA: San Andreas UnlockablesUnlockable Outfits

These are all the Unlockable Outfits in the game...

Unlockable How to Unlock

Medic Uniform Date Katie to %100
Pimp Suit Date Denise to %100
Overall's Outfit Date Helena to %100
Racing Outfit Date Michelle to %100
Police Uniform Date Barbara to %100
Valet Uniform Complete the mission "555-WE-TIP"
Gimp Suit Complete the mission "The Key to her Heart"
Croupier Uniform Complete the mission "Breaking the bank at Caligula's"

Girlfriends Cars

These cars are obtained through getting the girfriends to %50...

Unlockable How to Unlock

Green Hustler Date Denise to %50
Bandito Date Helena (Her car doesn't have any doors)
White Romero Date Katie to %50
Monster Truck Date Michelle to %50
Police Ranger Date Barbara to %50
Pink Club Date Millie to %50

Girlfriend Perks

Unlockable How to Unlock

Free Pay-and-Spray Date Michelle and you can use her Garage as a Pay-and-Spray
Keep weapons after being Wasted Date Katie
Keep weapons after being Busted Date Barbara
Pistol, Chainsaw, Molotov Cocktails, and Flame Thrower Date Helena(you can find the weapons in a big shed by her house)

Dual Weildable Weapons

Get these weapons to Hitman to Dual Weild them
Unlockable How to Unlock

Dual Pistol's Reach the Gun Rank "Hitman"
Dual Sawn-off Shotgun's Reach the Gun Rank "Hitman"
Dual Tec-9's Reach the Gun Rank "Hitman"
Dual Micro-SMG's Reach the Gun Rank "Hitman"

"Hidden Package" Rewards

Collect all the "hidden packages" in their respective areas to get these weapons...

Unlockable How to Unlock

Tec-9, AK-47, Sawn-off Shotgun, and Molotov Cocktails at CJ's house in Ganton Spray all 100 Graffiti Tags in Los Santos
Sniper Rifle, Grenades, Shotgun, and Micro-SMG at CJ's Garage in San Fierro Snap all 50 Snapshots in San Fierro
MP5, Satchel Charge, M4, and Combat Shotgun at The Four Dragons Casino in Las Venturas Collect all 50 Horseshoes in Las Venturas

Assets

Complete the assets missions/objectives to get money made at that location

Unlockable How to Unlock

Airstrip Asset Complete the Missions for the Airstrip
Burger Shot Asset Complete all 4 Deliveries in Las Venturas
Hippy Shopper Asset Complete all 4 Deliveries in San Fierro
Roboi's Food Mart Asset Complete all 4 Deliveries in Los Santos
The Johnson House Take Over Territories in Los Santos
Vank Hoff Hotel Valet Parking Asset Complete all 5 Levels of Valet Parking in San Fierro
Wang Cars Asset Complete the missions for this asset, plus the cars you steal will spawn inside the showroom
Zero's RC Shop Asset Complete all of the RC Shop missions

Vehicle Side-Mission Unlockables

Unlockable How to Unlock

CJ becomes Fireproof Complete all 12 Levels of the Firetruck Missions
Armor get raised to Maximum Complete all 12 Levels of the Vigilante Missions
Health get raised to Maximum Complete all 12 Levels of the Paramedic Missions
$50,000 & Free Train Rides Complete all 2 Levels of the Freight Train Missions
Nirto on all Taxis/Cabbies and Taxi's and Cabbies can Hop Succesfully Transport 50 People(Complete 50 Fares)
Entertaining prositutes earns you money (instead of taking it away) Complete level 10 of the pimping missions

Unlimited ammo

Unlockable How to Unlock

Unlimited ammo Complete the game 100% (get 100% on the stat Progress Made)

Bonus 1.000.000$

Locations are marked with checkered flag. See radar or map.

Unlockable How to Unlock

1.000.000$ bonus Finish all races 1st (four locations)

100% completition Bonus

Unlockable How to Unlock

Rhino spawns at CJ's house in Grove Stree complete the game 100%
Hydra spawns at CJ's house in Grove Street complete the game 100%
increased stats complete the game 100%
increased money complete the game 100%

Infinite sprint

Complete the Burglary mission by having C.J. steal $10,000 worth of stuff.
Unlockable How to Unlock
Infinite Sprint Complete the Burglary mission

GTA: San Andreas SecretsSave two cars in your garage

This works in the same way as the previous games. Normally you can only save one car in your garage, but with this you can save two or more! All you have to do is get your two or however many cars and bring them up to your garage. Drive one of them until the garage door opens, and then drive it half way in and get out of the car. This will keep the door open for you. Next, get into the other car and drive that all the way into the garage. Then get into the car half way in and drive it the rest of the way in and get out and leave the garage. Et viola! You now have two cars stored in your garage!

Stop gang attack on your territory.

To stop other gangs from attacking your territory, just save you game, this will stop the gang war and you won't have to fight them.

Free Money

Go to a strip club and stand in front of a stripper when the people watching them gives them money CJ will take it instead since you are where they put the money
Basketball Tricks

Click the left mouse button while playing basketball to do tricks with the ball.
Edit the stats of any vehicle in game.
First browse to your GTA:SA isntall directory, it will look something like this:
C:\Program Files\Rockstar Games\GTA San Andreas\

Then go to the data directory. MAKE A BACKUP OF ANY FILES BEFORE YOU EDIT THEM. To edit the vehicle stats, open the handling.cfg file in notepad. As you can see, all the info on every vehicle in in there. Follow the instructions in the comments to find out how to edit it.

You can do anyuthing like make a Rhino as light as a PCJ600 and control just as well.

Basically, you can edit anything in the game from these files. Just be careful what you edit and leave them as sane values to prevent glitches.

Choose size of the Moon

Shoot it with sniper to make it change size from bigger to smaller and vice versa.
GTA: San Andreas GlitchesFree Vehicle Repair
For free and fast car repair, park your car in one of your garages, back away to let the door close, then step torwards the garage so the door opens again. The car will be instantly repaired of all dents, etc.

This is especially useful if you have an expensive modded car that you want to keep for certain ingame stats.

NOS recharge without waiting.

Instead of having to wait for the NOS to recharge to use again, exit then enter the car, and you can use the NOS again.

Early and riskfree exploration

During the mission "Reuniting the Families", you have to shoot down a group of SWAT team and then enter the motel to save Sweet. Beating the SWAT, instead of getting into the motel, you can travel all around the entire map and enter all the restricted areas like the military base and the maps that are locked. You will have no wanted level and no cops will chase you. You can explore the entire map freely without taking risk. This is the best time to confirm vehicle and item locations and to collect the snapshots, oysters and horseshoes.
Restricted areas open for you

During Woozie's mission "Amphibian Assault", the wanted level system is disabled. You can now travel everywhere in the game including the restricted areas like the Eastern naval base and all police stations without the cops chasing you. This is time to collect the two oysters in the extremely dangerous naval base without being shot.

Codes Galore!

During Gameplay, type any of these cheats (note: codes are not case sensitive)

Cheat Effect

THUGSTOOLS All ''light'' weapons
PROFESSIONALTOOLS All ''medium'' weapons
NUTTERTOOLS All ''heavy'' weapons
ASPIRINE Full Health
PRECIOUSPROTECTION Full Armor
ICANTTAKEITANYMORE Commit Suicide
YOUWONTTAKEMEALIVE Raise Wanted Level
LEAVEMEALONE Decrease Wanted Level
FANNYMAGNET Ladies Man, Women Follow You
CERTAINDEATH Makes you smoke a cigarette
DEEPFRIEDMARSBARS Makes Tommy fatter
PROGRAMMER Gives Tommy girly arms/legs
STILLLIKEDRESSINGUP Change Skin/Clothes
CHEATSHAVEBEENCRACKED Play as Ricardo Diaz
LOOKLIKELANCE Play as Lance Vance
MYSONISALAWYER Play as Ken Rosenberg
ILOOKLIKEHILARY Play as Hilary King
ROCKANDROLLMAN Play as Love Fist character (Jezz Torent)
WELOVEOURDICK Play as Love Fist character (Dick)
ONEARMEDBANDIT Play as Phil Cassidy
IDONTHAVETHEMONEYSONNY Play as Sonny Forelli
FOXYLITTLETHING Play as Mercedes
PANZER Spawn a Rhino
TRAVELINSTYLE Spawn a Bloodring Banger
GETTHEREQUICKLY Spawn a Bloodring Banger #2
GETTHEREFAST Spawn a Sabre Turbo
GETTHEREVERYFASTINDEED Spawn a Hotring Racer
GETTHEREAMAZINGLYFAST Spawn a Hotring Racer #2
THELASTRIDE Spawn a Romero's Hearse
ROCKANDROLLCAR Spawn Love Fist's Limo
RUBBISHCAR Spawn a Trashmaster
BETTERTHANWALKING Spawn a Caddie
BIGBANG Blow up nearby cars
MIAMITRAFFIC Aggressive Drivers
AHAIRDRESSERSCAR All cars are pink
IWANTITPAINTEDBLACK All cars are black
COMEFLYWITHME Cars can fly
GRIPISEVERYTHING Perfect Handling
GREENLIGHT All traffic lights are green
SEAWAYS Cars can drive/hover over water
WHEELSAREALLINEED Only the wheels of a car are visible
LOADSOFLITTLETHINGS Sportscars have big wheels
ALOVELYDAY Sunny/Clear Weather
APLEASANTDAY Light Clouds
ABITDRIEG Dense Clouds
CANTSEEATHING Foggy Weather
CATSANDDOGS Stormy Weather
LIFEISPASSINGMEBY Speed up game clock
ONSPEED Makes everything faster
BOOOOOORING Makes everything slower
FIGHTFIGHTFIGHT Peds Riot
NOBODYLIKESME Peds Hate You
OURGODGIVENRIGHTTOBEARARMS Peds Carry Guns
CHICKSWITHGUNS Girls Carry Guns
CHASESTAT Shows Media Level (when 2+ stars)
AIRSHIP Fast boats can fly for short periods of time

GTA: Vice City Unlockablesbullet proof car sabre tubro
Unlockable How to Unlock

Bullet proof Sabre Turbo Go to the mission where you must race Hillary. When the race starts turn around and drive for about ten seconds, park your car across the street to make a road block. Wait for Hillary to come and shoot him in the head with a sniper rifle.

Misc. Unlockables
Unlockable How to Unlock
150 Armor Beat a level 12 Vigilante Mission

Rewards for completing the Game 100%

Unlockable How to Unlock

200 Health Complete the Game 100%
200 Armor Complete the Game 100%
200 Health on all cars Complete the Game 100%
3 Bodyguards in your Mansion Complete the Game 100%
Frankie t-shirt found in mansion with "I BEAT VICE CITY AND ALL I GOT WAS THIS LOUSY T-SHIRT" on it Complete the Game 100%

Misc. Unlockables

Unlockable How to Unlock

Infinite Sprint on Foot Beat a level 12 Paramedic Mission

150 Health Beat a level 10 Pizza Boy Mission

Taxi Hydraulics 100 Taxi fares

Fireproof on Foot Beat a level 12 Firetruck Mission
Faster weapon reload Beat 45 or more Points at the shooting range

Rewards for finding Hidden Packages

Unlockable How to Unlock

Body Armor delivered to Hideout(s) find 10 Hidden Packages
Chainsaw delivered to Hideout(s) find 20 Hidden Packages
Flame-thrower delivered to Hideout(s) find 40 Hidden Packages
Hunter appears at Military Base find 100 Hidden Packages
Laser Scope Sniper Rifle delivered to Hideout(s) find 50 Hidden Packages
Minigun delivered to Hideout(s) find 60 Hidden Packages
Python delivered to Hideout(s) find 30 Hidden Packages
Rhino appears at Military Base find 90 Hidden Packages
Rocket Launcher delivered to Hideout(s) find 70 Hidden Packages
Sea Sparrow spawns at Vercetti Mansion find 80 Hidden Packages

Secret Cars

These are the secret cars list and how to get them:

Unlockable How to Unlock

Bloodring Banger Complete the Bloodring event at Hyman Memorial Stadium and two will spawn in the nearby parking lot.
Black Voodoo Steal it during the Two Bit Hit Mission.
BP/EP/DP/FP Admiral Steal it during the Guardian Angels mission.

Deluxo Complete the first list of cars at the car showroom and it will spawn on the first floor. The list is on the wall down by the garages.

Hotring Racer Complete the fourth list of cars at the car showroom and it will spawn on the second floor.

Hunter Collect all 100 hidden packages or complete all of the main story missions and it will spawn at Fort Baxter Air Base.
Love Fist Limo Take it to a garage during one of the Love Fist missions in which you drive the limo.

Rhino Collect 90 hidden packages and it will spawn at Fort Baxter Air Base. Alternately, get six stars and the army will use it against you.

Romero's Hearse Steal it during the final Avery Carrington Mission

Sabre Turbo Complete the second list of cars at the car showroom and it will spawn on the first floor.
Sandking Complete the third list of cars at the car showroom and it will spawn on the second floor.
Sea Sparrow Collect 80 hidden packages and it will spawn behind the Vercetti Estate.

Skimmer Complete all the Film Studio Missions and it will spawn behind the Film Studio.
Spand Express After the Jury Fury mission by Ken Rosenburg, you can steal the car.

White Walton Steal it during the Gun Runner Mission.
Zebra Taxi Complete all of the missions for the Kaufman Cabs asset and it will spawn in the parking lot.

Vice City Unlockables

Unlockable How to Unlock

"Best Shooter" trophy at Ocean View Hotel Beat Phil's score in the "The Shootist" mission.
"Gash" shopping bag at Vercetti Estate Complete the Protection Ring missions.
0.357 Pistol at Vercetti Estate Complete the "Keep Your Friends Close" mission
Bag of cash at Ocean View Hotel Complete the Printing Press missions.
Robber's mask at Ocean View Hotel Complete the "The Job" mission.

GTA: Vice City Easter EggsGrow\Shrink Moon

At night, shoot the full moon with a sniper rifle.
The moon will grow and shrink each time you shoot it.
A real virtual Easter Egg
Aim for the Helipad on top of the Vice City-News Station (on the second Island). Sometimes there is the VCN Mavrick on the Helipad. The building on the right has a hallow wall so you can go through it. The hallow part is a unrealistic looking window on the left of it. Run from one side of the heliport to the other and then jump into the hallow window. There you will see the Easter Egg with a sign on it that says Happy Easter.
GTA: Vice City SecretsChange vehicle stats
In the GTA-Vice City Directory, there should be a subdirectory called data. In this folder you'll find a file called "Handling.cfg". Change the File name to "Handling.txt" and open it. Here you can change the weight of the car, it's crash damage multiplier, speed, Acceleration and others. The file itself gives good pointers towards which values should be changed, and you should backup any files you intend to edit.
GTA: Vice City GlitchesGet Hookers in the Australian Version
Australian Hookers will simply not get in your car, however if you drive next to a hooker and use the ''pedestrians get in car'' cheat 'HOPINGIRL' the hooker /will/ get into the car, and when you go to a secluded place the car starts rocking and increases your health to up to 25 HP more.

Quick Reload

When you are using a weapon and finish off a clip, quickly scroll the mouse wheel up, then quickly back down to the weapon you were using. The weapon should already be reloaded. This makes it easier when in a gang battle.
Put two Vehicles in Your Garage
One of the Two vehicles MUST be a Motorcycle. Get a Motorcycle and park it half way into the entrance (preferably of to the side). Get another Motorcycle or a car nearby and drive it into the garage. Hop on the Motorcycle thats parked halfway and drive that in too.

Now you have 2 Vehicles in your garage!

All Buildings and Terrain Disappear- Find Packages with ease!
Take a bike (PCJ works well) and ride it as fast as you can into the Pole Position Strip Club entrance way, but before you get there hop off the bike and let it slide all the way to the end. Then enter the Pole Position and you should be standing on or next to your bike. If it is far enough down the hall you can get on it without having to exit the building. Once on the bike and having exited the building you can go anywhere in the game without the distracting buildings and terrain showing up; they are all invisible.

Full Armor for Version 1.1
If you have the 1.1 update (came out 27/06/02), the full armor code, turtoise, has been changed to tortoise.

Cheat Effect

Cheat Codes
Main Cheats:

GUNSGUNSGUNS = Weapon Cheat
IFIWEREARICHMAN = Money Cheat
GESUNDHEIT = Health Cheat
TURTOISE (or TORTOISE, in 1.1) = Armor Cheat

Weather Cheats:

SKINCANCERFORME = Nice Weather
ILiKESCOTLAND = Fog Thickness Level 1
ILOVESCOTLAND = Fog Thickness Level 2
PEASOUP = Fog Thickness Level 3

Pedestrian Cheats:

ITSALLGOINGMAAAD = Crazy Peds
NOBODYLIKESME = Peds Want To Kill You
WEAPONSFORALL = Peds Pack Heat (Carry Weapons)
CHITTYCHITTYBB = Flying Cars

Other Cheats:

MOREPOLICEPLEASE = Wanted Level Up
NOPOLICEPLEASE = Wanted Level Down
GIVEUSATANK = Spawn A Tank
ANICESETOFWHEELS = See-Thru Cars
CORNERSLIKEMAD = Better Driving Code
TIMEFLIESWHENYOU = Fast Gameplay
ILIKEDRESSINGUP = Change Character
BANGBANGBANG = Blow Up Cars Around You

Unknown Cheats:

NASTYLIMBCHEAT = Nastier Limb Removal?
MADWEATHER = Time Speeds Up?
BOOOOORING = Unknown (Time Slows Down?)


Cheat Effect

Unlock The Borgine Taxi
Complete at least 100 taxi missions to unlock a new, faster taxi.
Police Bribes At Hideout
Complete 10 vigilante missions on one island to get a police bribe at your hieout. Complete 20 vigilante missions on each island to get a total of 6 police bribes at each hideout.
Flame-Thrower At Your Hideout
Complete 20 fire mission on each island to get a flame thrower at each hideout.
Hidden Package Rewards
Each of these weapons are unlocked at your hideout after getting a certain number of hidden packages.
Unlockable How to Unlock
Pistol at Hideout Find 10 Hidden Packages
Uzi at Hideout Find 20 Hidden Packages
Grenades at Hideout Find 30 Hidden Packages
Shotgun at Hideout Find 40 Hidden Packages
Armor at Hideout Find 50 Hidden Packages
Molotovs at Hideout Find 60 Hidden Packages
AK47 at Hideout Find 70 Hidden Packages
Sniper Rifle at Hideout Find 80 Hidden Packages
M16 at Hideout Find 90 Hidden Packages
Rocket Launcher at Hideout Find 100 Hidden Packages

Grand Theft Auto III SecretsFit More Cars Into Your Garage
In your second hideout put in two cars into the garage. Then get out and walk up to the door so it opens. Get into the third car and drive it in before the door closes.

Ambulance Mission Rewards

Complete 35 ambulance missions to get a heart at your hideout.

Complete 70 ambulance missions to get an adrenaline pill at your hideout.

Get onto Level 12 in an ambulance mission and you will get the infinite run cheat.

Tip for Entering Codes

Codes can still be entered while the game is paused (at the menu screen). Hit Esc to pause the game, then type the codes desired. The codes' effects will take place once you unpause. This trick does work for entering multiple codes at once, and is especially useful when you must enter codes quickly.
Editing car stats

In the GTAIII-directory there should be a subdirectory called data. In this directory, you will find the file handling.cfg, and others, containing the stats for different cars and objects.

Here you can change the weight of the car (column A, higher is better) and it's crash damage multiplier (column Y, lower is better, 0 means no crash damage), in order to make any car have the weight of a tank, and take no damage from crashes.

The file itself gives good pointers towards which values should be changed, and you should backup any files you intend to edit. The limits mentioned in the file are just recommendations, you really can put in anything you want. When done, just restart the game, and you edited police car will push vehicles like a Fire Engine, and take absolutely no damage from crashing.
Easy Fire Truck Missions

Steal a fire truck and begin the Firefighter mode. When you are assigned a new fire to put out, press F1 to start a replay, then F1 again to cancel it. The fire will be immediately extinguished.

Customize game music
If you're sick of the regular in game radio stations, you can customize the game with your own MP3s. In the GTAIII folder, look for a folder called MP3. Place all the songs you want into this folder. The next time the game is started, scroll through the radio stations until you get to the last one. A new station should appear, which will play all your personal MP3 songs.

Easy Vigilante Missions

When in a police car, enforcer, fbi car, or rhino, start the vigilante missions. Drive close to the target vehicle, and press ESC to call up the options menu. Choose 'Resume Game', and when the game resumes, your target will stop his/her vehicle and get out, making them much easier to kill.

Free Repairs

Take a damaged car to your garage. Exit the garage, watch the door close, and then open it up again. Your car will be repaired.
Do Taxi Missions with a Different Car
Drive up to a taxi in the car you intend to use. Get in the taxi, press and hold CAPS LOCK. Still holding CAPS LOCK, get out of the taxi and get in the car you started with. Let go of the CAPS LOCK key and now you can do taxi missions in that car.

moon cheat

When the moon is visible at night you can shoot it with your sniper rifle to make it grow larger or shrink.
No More Gang Warz
In some missions the objective is to kill members of certain gang. These obviously makes the gang anrgy at you and when you drive or run by the gang members they will shoot and try to pull you out of your car. This can be changed by going in to the program files of your GTA game. In this folder is a sub-folder called data. In this folder is a file called pedstats.dat. Open this in Word or Notepad. In this document you can change the stats of every ped in the game. the ones you are looking for is gang 1-7. As the doc suggests if you change their fear(100 is good), temper(0 is good) and lawfullness(100 is good). Careful you might want to backup this file incase you mess up or want to revert back to the old way it was.
Grand Theft Auto III GlitchesUnlimited time in Taxi Missions
Start a Taxi Mission, pick up someone, and drop em' off. Now, go to pick someone else up, but make sure they don't get in your taxi until the time is at exactly 0 seconds left. The timer should disappear, but the passenger will not leave your vehicle. You can now continue doing taxi missions without the timer, until you quit the mission or blow up your cab.
Get to Staunton Island at the very beginning of the game.
If you want to go to Staunton Island, but don't want to have to complete the missions in portland, then first enter the code chittychittybb. Next, steal a police car and head onto the broken freeway. Go as fast as you can and when you reach the broken part your car will begin to hover. All you do now is just make sure you don't land in the water and then you're in Staunton Island without completing any missions.
Get to Shoreside Vale once you have access to Staunton Island
Before you start, make sure you have armor and your health is at 100. Drive to the subway down the street from your house save location and drive your car down the ramp and onto the subway tracks turn right and stay on the left side of the track so the subway doesn't hit you. Keep going until you see on the screen 'St. Francis Airport' drive up to the point where the tunnel has a curve park your car on the left side of the tracks, and get out and go to the right side and hug the wall as tight as you can and wait for the subway to come. Once it comes, let it hit you and you might have to move to the right a little once it hits you so that you go through the wall or sometimes you'll fall through the floor. You should see your character falling through this green or blue screen and then the loading screen should come up and say 'Welcome to Shoreside Vale'. You'll fall right outside or near the airport.

Note: If you die you'll go back to Staunton Island.
Almost infinite sprinting

Instead of holding down the sprint button, tap it rapidly and you will be able to run alot further before getiting tired.

FBI CAR

Steal an FBI car and take it to paint and body. Get it fixed and when you hit the button to turn on the lights while moving, it will have hydros and jump over other cars.
Get to Staunton and Shoreside without any cheats.
Get an ambulance and drive to the entrance to the Porter Tunnel. Park the ambulance on the left footpath right up against the blue barrier (back facing the barrier). Now jump on top of the ambulance and then jump again. You will end up in "Blue Hell" on top of the tunnel. Now jump over the barrier and continue to run but make sure to stay on the far left side. Keep running following the tunnel to the left until you hit an invisible wall now simply fall off and you will drop from Blue Hell onto Staunton Island a little north of the hospital. To get to Shoreside from here simply take the Porter tunnel as there is no barrier blocking you (the barrier is still in Portland).
This works 100% on the PS2 however on the PC 50% of the time you may need a grenade and full armour as you may get stuck on top of the ambulance so you will need the grenade to blow the ambulance to knock you above the tunnel. Enjoy!