Also, perhaps the PSP version is a port that was exclusive to certain regions, like Japan. So availability might be limited. The user might be looking for availability, so need to clarify that the PSP version is a real product, but may not be available for purchase today. Legal ISOs would require ownership of the physical copy or purchasing from an online store if it's available. However, Sony has phased out the PSP's official distribution, so online stores might not carry it anymore.