While there was never a " Resident Evil " game developed specifically for the PSP, you can still play several titles on the handheld or through emulators using compressed file formats like CSO (Compressed ISO). Available Resident Evil Titles for PSP
Use Custom Firmware (CFW): Ensure your PSP is running PRO-C or ME firmware. resident evil psp iso highly compressed
Popular compression methods:
Since there is no native PSP Resident Evil, you are likely looking for the PS1 versions optimized for the handheld: Resident Evil 1 (Director's Cut) : The classic survival horror experience. Resident Evil 2 While there was never a " Resident Evil
.7z, .rar, or .zip formats. You will need an extraction tool like ZArchiver (Android) or WinRAR (PC) to convert the compressed file back into a playable .iso or .cso file.