If you want to play God of War on your phone or PC using PPSSPP, there are that are fully compatible and run excellently: God of War: Chains of Olympus
The PS3 hardware is vastly more powerful than the original PSP. Because God of War III was never released on the PSP, there is no official .iso file that the PPSSPP emulator can recognize or play. god of war 3 ppsspp download highly compressed