Most Resident Evil titles for the PSP are that have been converted to the .iso or .cso (compressed ISO) format.
Resident Evil on the PSP is a classic survival horror experience that still holds up today. By downloading a highly compressed Resident Evil PSP ISO file, you can relive the horror on your PSP or through emulation on other devices. Follow our guide to download and play the game, and get ready to face your fears on the go.
folder on your PSP's memory stick or your emulator's game directory. Launch Emulator and navigate to the directory where you saved the game. Where to Find Files