The PlayStation Portable (PSP) remains one of the most beloved handheld consoles in gaming history. While physical UMD discs are becoming harder to find, digital emulation and custom firmware have kept the platform alive. If you are looking to build your digital library, you have likely come across the term "CSO."

Finding and using compressed PSP games () from the Internet Archive allows you to store more titles on your memory stick while enjoying classic handheld experiences. The Story of Your PSP Setup