theres good old AR or try this
Cheats for The Godfather are entered during the game while paused.
$5,000
Cheat code: Square, Circle, Square, Square, Circle, L3
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Full Ammo
Cheat code: Circle, Left, Circle, Right, Square, R3
Full Health
Cheat code: Left, Square, Right, Circle, Right, L3
Unlock All Movies
Note: this code is entered at the main menu where trailer is shown.
Cheat code: Circle, Square, Circle, Square, Square, L3