This requires finding a that has been converted for PSP. These are not official and may have bugs like missing textures, crashes, or no sound.
Only download apps and game files from official or trusted sources. Pirated game files often come bundled with malware or intrusive ads. Installing apps from unknown APKs raises security risks and can compromise your device or data. Download Gta 3 Ppsspp Android
Select and browse to the folder where you extracted the ISO. Tap the GTA 3 icon to launch the game. This requires finding a that has been converted for PSP
Go to the Google Play Store and search for "PPSSPP - PSP emulator." Download Gta 3 Ppsspp Android