If you're on PC or Mobile, use PPSSPP . It handles compressed .CSO files natively.
Ben 10: Protector of Earth remains a nostalgic gem that holds up surprisingly well. For those looking to replay the game, seeking a "Highly Compressed" version is a smart move for saving storage space, provided the file isn't compressed to the point of breaking. Similarly, ensuring you have a version compatible with your specific firmware is essential. If you're on PC or Mobile, use PPSSPP
Ben 10: Protector of Earth is an action-adventure game developed by High Voltage Software and published by DTTF (Double-Take, Taito, Fox Interactive, and DreamCatcher Interactive) in 2006. The game was released for the PlayStation 2, PlayStation Portable (PSP), Xbox, and Game Boy Advance platforms. The PSP version of the game has gained popularity among gamers, and many are looking for a highly compressed download patched version. For those looking to replay the game, seeking