You should be careful on using cheat codes too frequently until you complete the mission where you save Madd Dogg from jumping off the casino rooftop. The game will prevent you from completing this mission if codes have been used excessively; this number appears to be cheats being used 500 or more times. When this number has been exceeded, Madd Dogg will jump off the roof in a few seconds, making it impossible to save him. Note: If you encounter this problem, enable the "Slow motion" or "Adrenaline effects" codes to get there faster. You still must be quick in order to save Madd Dogg.

While playing the game, press Down, A, Right, Left, Right, R, Right, Down, Up, Y. If you entered the code correctly, a message will appear. Note: Falls, explosions, drowning, and vehicle rundowns are still harmful.

While playing the game, press L, R, X, R, Left, Black, R, Left, X, Down, L(2). If you entered the code correctly, a message will appear. You no longer need to reload, and will have unlimited ammunition for each new weapon that is picked up. Repeat this code to disable its effect.

While playing the game, press R, Black, L, Black, Left, Down, Right, Up, Left, Down, Right, Up. If you entered the code correctly, a message will appear. The least powerful weapons in each category and rocket launcher will be unlocked. To get infinite ammunition for this or the other weapons tiers, repeatedly enable the code until no ammunition number appears beneath the gun pictures. Note: Enabling this code will cause your street creds to drop in points. You can check your creds in the stats menu at the pause screen. If you are in the negative, you are a Playa-Hater.

While playing the game, press R, Black, L, Black, Left, Down, Right, Up, Left, Down(2), Left. If you entered the code correctly, a message will appear. The moderate powered weapons in each category will be unlocked, including the flame thrower and sniper rifle. Note: Enabling this code will cause your street creds to drop in points. You can check your creds in the stats menu at the pause screen. If you are in the negative, you are a Playa-Hater.

While playing the game, press R, Black, L, Black, Left, Down, Right, Up, Left, Down(3). If you entered the code correctly, a message will appear. The high powered weapons in each category will be unlocked, including the chainsaw and lock-on bazooka. Note: Enabling this code will cause your street creds to drop in points. You can check your creds in the stats menu at the pause screen. If you are in the negative, you are a Playa-Hater.

While playing the game, press Down, X, A, Left, R, Black, Left, Down(2), L(3) to receive dual wield, etc. If you entered the code correctly, a message will appear.

While playing the game, press R, Black, L, A, Left, Down, Right, Up, Left, Down, Right, Up. If you entered the code correctly, a message will appear. Note: You must enter this code multiple times to increase your total money. If this code is enabled when your car is smoking or damaged it will get repaired. During various missions where you are in a car while someone else drives and you shoot (for example, Reuniting The Families), enabling this code will instead blow the car up, failing the mission.

While playing the game, press Right, White(2), Down, White, Up(2), White, Black. If you entered the code correctly, a message will appear. You can now get money from prostitutes instead of paying them.

While playing the game, press Up, Left(2), Down, B, X, L(2), White, R, Black. If you entered the code correctly, a message will appear. All taxis will now have nitrous.

While playing the game, press R(2), B, Black, Left, Right, Left, Right, Left, Right. If you entered the code correctly, a message will appear.

While playing the game, press B, Right, B, Right, Left, X, A, Down. If you entered the code correctly, a message will appear.

While playing the game, press R(2), B, Black, Up, Down, Up, Down, Up, Down. If you entered the code correctly, a message will appear.

While playing the game, press B, Right, B, Right, Left, X, Y, Up. If you entered the code correctly, a message will appear. Note: This will not remove any wanted level stars you may already have.

While playing the game, press Down, Up(2), Up, A, Black, R, White(2). If you entered the code correctly, a message will appear. Repeat this code to disable its effect.

While playing the game, press X, White, A, R, White(2), Left, R, Right, L(3). If you entered the code correctly, a message will appear.

While playing the game, press L, R, Y, Down, Black, A, L, Up, White(2), L(2). If you entered the code correctly, a message will appear. Note: When starting a new game or when you have a very low respect level, enable the "Maximum respect" code twice and your total respect level will be green.

While playing the game, press B, Y(2), Up, B, R, White, Up, Y, L(3). If you entered the code correctly, a message will appear.

While playing the game, press Down, Left, L, Down(2), Black, Down, White, Down. If you entered the code correctly, a message will appear.

While playing the game, press Y, Up(2), Left, Right, X, B, Left. If you entered the code correctly, a message will appear. Note: You will not be able to workout at any of the gyms.

While playing the game, press Y, Up(2), Left, Right, X, B, Down. If you entered the code correctly, a message will appear. Note: This will reduce the muscle stat to zero.