PSP ISOs, when highly compressed, require sufficient storage space on the device and may need specific software to decompress and use.

The legality of downloading or distributing compressed ISO files of games can vary. Games are intellectual property protected by copyright laws. Downloading or distributing copyrighted material without permission is illegal in many jurisdictions.

Less data means faster download times, which is perfect for users with limited data or slower internet connections.

Superman Returns remains one of the most ambitious open-world superhero games of the mid-2000s. While the PlayStation 2 and Xbox 360 versions received major marketing, the PlayStation Portable (PSP) version offered a unique, portable take on protecting Metropolis.