Here are all recent cheats as of 01/10/05 7:00PM
Armor/Health/$250,000:
R1, R2, L1, X, Left, Down, Right, Up, Left, Down, Right, Up
Spawn Rancher:
Up, Right, Right, L1, Right, Up, Square, L2
Stuntplane: Circle, Up, L1, L2, Down, R1, L1, L1, Left, Left, X, Triangle.
Parachute: Left, Right, L1, L2, R1, R2, R2, Up, Down, Right, L1.
Monster: Right, Up, R1, R1, R1, Down, Triangle, Triangle, X, Circle, L1, L1.
Muscle Upgrade: Triangle, Up, Up, Left, Right, Square, Circle, Left
Jump 100ft on Bmx: Triangle, Square, Circle, Circle, Square, Circle, Circle, L1, L2, L2, R1, R2
Jet Pack Cheat: L1, L2, R1, R2, Up, Down, Left, Right, L1, L2, R1, R2, Up, Down, Left, Right
VORTEX (HOVER CRAFT)
Triangle, Triangle, Square, O, X, L1, L2, Down, Down
HYDRA (PLANE)
Triangle, Triangle, Sqaure, O, X, L1, L1, Down, Up
Mega Jump - CJ can now jump 10 times as high as before. That's right; CJ's getting higher than ever.
Up, Up, Triangle, Triangle, Up, Up, Left, Right, Square, R2, R2
Quad - Spawns a quad that drops down right in front of CJ.
Left, Left, Down, Down, Up, Up, Square, Circle, Triangle, R1, R2
Cheat: Vehicle of Death
Any vehicle the player is using becomes invincible and gains the ability to instantly destroy anything it touches. L1, L2, L2, UP, DOWN, DOWN, UP, R1, R2, R2
Cheat: Beach Party
Pedestrians turn into girls wearing swimsuits. Vehicles are also beach style and CJ will be dressed in shorts and sandals: UP, UP, DOWN, DOWN, SQUARE, CIRCLE, L1, R1, TRIANGLE, DOWN
Commit Suicide:
Right, L2, Down, R1, Left, Left, R1, L1, L2, L1
Weapons Set 1:
R1, R2, L1, R2, Left, Down, Right, Up, Left, Down, Right, Up
Weapons Set 2:
R1, R2, L1, R2, Left, Down, Right, Up, Left, Down, Down, Left
Weapons Set 3:
R1, R2, L1, R2, Left, Down, Right, Up, Left, Down, Down, Down
Lower Wanted Level:
R1, R1, Circle, R2, Up, Down, Up, Down, Up, Down
Raise Wanted Level:
R1, R1, Circle, R2, Right, Left, Right, Left, Right, Left
Spawn the Rhino:
Circle, Circle, L1, Circle, Circle, Circle, L1, L2, R1, Triangle, Circle, Triangle
Spawn the Bloodring Banger:
Down, R1, Circle, L2, L2, X, R1, L1, Left, Left
Spawn the Caddy:
Circle, L1, Up, R1, L2, X, R1, L1, Circle, X
Spawn the Hotring#2:
R1, Circle, R2, Right, L1, L2, X, X, Square, R1
Spawn the Hotring#1:
R2, L1, Circle, Right, Up, Circle, R2
Spawn the Stretch Limo:
R2, Up, L2, Left, Left, R1, L1, Circle, Right
Spawn the Trashmaster:
Circle, R1, Circle, R1, Left, Left, R1, L1, Circle, Right
Flying Boats:
R2, Circle, Up, L1, Right, R1, Right, Up, Square, Triangle
Cars float on Water:
Right, R2, Circle, R1, L2, Square, R1, R2
Aggressive Traffic:
R2, Circle, R1, L2, Left R1, L1, R2, L2
Pink Cars:
Circle, L1, Down, L2, Left, X, R1, L1, Right, Circle
Black Cars:
Circle, L2, UP, R1, Left, X, R1, L1, Left, Circle
Perfect Handling:
Triangle, R1, R1, Left, R1, L1, R2, L1
Faster Cars:
Right, R1, Up, L2, L2, Left, R1, L1, R1, R1
Blow Up All Cars:
R2, L2, R1, L1, L2, R2, Square, Triangle, Circle, Triangle, L2, L1
Pedestrians Attack You:
Down, Up, Up, Up, X, R2, R1, L2, L2
Pedestrians Riot:
Down, Left, Up, Left, X, R2, R1, L2, L1
Pedestrians have Weapons:
R2, R1, X, Triangle, X, Triangle, Up, Down
Really Sunny Weather:
R2, X, L1, L1, L2, L2, L2, Triangle
Rainy Weather:
R2, X, L1, L1, L2, L2, L2, Circle
Cloudy Weather:
R2, X, L1, L1, L2, L2, L2, Square
Foggy Weather:
R2, X, L1, L1, L2, L2, L2, X
Sunny Weather:
R2, X, L1, L1, L2, L2, L2, Down
Faster Clock Speed:
Circle, Circle, L1, Square, L1, Square, Square, Square, L1, Triangle, Circle, Triangle
Cars Fly
But not like they did in Vice City. The controls are more accurate, and the whole process is just like flying a normal plane.
Square, Down, L2, Up, L1, Circle, Up, X, Left
Full Weapon Aiming Whilst Driving
Aim and shoot at passing pedestrians/vehicles, just like your homies would during drive-by shootings.
Up, Up, Square, L2, Right, X, R1 Down, R2, Circle
Gangs Control the Streets
Streets deserted except for gunmen fighting in the streets. No cops or regular citizens. No traffic except in gang territories.
L2, Up, R1, R1, Left, R1, R1, R2, Right, Down
Really Fat CJ
Triangle, Up, Up, Left, Right, Square, Circle, Down
Really Skinny CJ
Triangle, Up, Up, Left, Right, Square, Circle, Right
Infinite Oxygen (Lung Capacity)
Down, Left, L1, Down, Down, R2, Down, L2, Down
Invisible Cars
Triangle, L1, Triangle, R2, Square, L1, L1
Reduced Traffic
X, Down, Up, R2, Down, Triangle, L1 Triangle, Left
Taxis have nitrous
Up, X Triangle, X, Triangle, X, Square, R2, Right
Fast/Rare cars appear regularly
Up, L1, R1, Up, Right, Up, X, L2, X, L1
Move Fast
Triangle, Up, Right, Down, L2, L1, Square
Orange Sky
Just like those early preview screens they released, like the one where Carl has a giant hand. This cheat locks the clock at 21:00.
Left, Left, L2, R1, Right, Square, Square, L1, L2, X
Slow Motion
Triangle, Up, Right, Down, Square, R2, R1
Mega Punch
Punches send people flying into the next block. One hit kills. Watch out, peds have it too!
Up, Left, X, Triangle, R1, Circle, Circle, Circle, L2
Dozer
R2, L1, L1, Right, Right, Up, Up, X, L1, Left
I don't know if Dozer and Mega punch work.