The Behemoth officially released Castle Crashers on Xbox 360, PlayStation 3, PC (Steam), Xbox One, PlayStation 4, and Nintendo Switch.
Despite years of fan requests dating back to 2008, no official port was ever developed for the PSP. castle crashers psp iso 171 top
If you want the Castle Crashers experience on the go, there are better, official alternatives: The Behemoth officially released Castle Crashers on Xbox
If you encounter a file claiming to be a Castle Crashers PSP ISO, it is likely one of the following: there are better
Be extremely cautious. Sites offering "exclusive" ISOs for consoles that never had the game are often sources of malware or phishing scams. Best Ways to Play Castle Crashers Portably