Here is a list of Cheats for The Godfather for PS2:
Pause the game and enter the following codes:
Cheat for all “The Godfather” movies on PS2: circle, square, circle, square, square, L3.
Trick to earn $5000: square, circle, square, square, circle, L3.
Full Ammo Cheat: circle, left, circle, right, square, L3.
Makeup for maximum energy: left, square, right, circle, right, L3.
Infinite Ammo Cheat: R1, R2, R1, R2, left, right, up, down, right, down.
Trick to get the bazooka: square, triangle, circle, L1, R1, up, down, up, down, up, down.
Trick to unlock missions: up, down, right, left, left, right, right, down, up.
Trick to get the machine gun: up, right, down, left, L1, R1, L2, R2, circle.
Trick to get the pistol (Magnum): R1, R2, L1, square, square, X, triangle, triangle, X.
Trick to get unlimited money and respect on The Godfather:
After finishing the first mission, save before the phone call, exit and re-enter the game and so you can earn respect and money again, and you can do this trick as many times as you want.
Trick to get infinite ammo:
Become a don or fnew york to complete the game after successfully doing all the extortions and after having done all the contract killings.
Trick for decreasing the Wanted level:
If you are wanted by the Police and have 5 wanted level badges, try by all means to go to one of your homes and save. At the end of the save you will see that only 2 badges will remain.
Scarface Cheats: The World Yours