You cannot just drag the .ISO or .CSO file onto a stock PSP. To play a downloaded ROM, you need:
Verified PSP ROMs will always extract into an .ISO or .CSO file. If a website hands you an .EXE or .APK file, do not open it , as it is likely malware.
In the console version, the city’s damage meter was unforgiving. In the PSP ROM, it is more forgiving, allowing casual players to enjoy the power fantasy without being demoted to "janitor who cleans up rubble" every five minutes.
Target locking and cycling through superpowers. Troubleshooting Common ROM Issues
The game follows the basic plot of the movie, with missions that involve saving civilians, fighting minions of Lex Luthor, and engaging in large-scale battles. How to Play the Superman Returns PSP ROM (Emulation)
You can fly anywhere in the city, from dodging elevated trains to reaching the top of skyscrapers. Villains and Bosses:
If you have acquired the (look for the .ISO format for best results), here is how to play it like a pro.