So, why are millions of people searching for "Resident Evil 4 PPSSPP ISO" ? Because of the incredible power of the PPSSPP emulator and the homebrew community. The version everyone plays is actually a conversion of the or the PlayStation 2 version repackaged into an ISO file that the PPSSPP emulator can read. Alternatively, some play Resident Evil: Revelations (which was on 3DS, not PSP).

: Ensure you have the PPSSPP emulator installed on your device. It's available for free on the official PPSSPP website.

: These are often heavily modified fan projects, sometimes claimed to be as small as Android Mobile Ports