In order to start console games, the correct emulator must be installed on your PC, which therefore allows the appropriate reading of the downloaded ISO. The wrong emulator will not allow you to start the downloaded game.
Console games are perfect backup copies of games on specific media and are generally available for download as an ISO (or ROMs). ISOs are read by emulators only if the emulator is the right one for the type of game downloaded. Obviously you cannot expect to download a PSP game and start it with a PS1 or PS2 emulator. If you want, you can reach our emulator’s section simply clicking here.