To be clear and helpful:

Wait, that is incorrect. The Behemoth's catalogue is distinct. The actual exclusive connection lies in Alien Hominid HD , or perhaps the confusion stems from Scott Pilgrim vs. The World: The Game , which was a beat-'em-up exclusive to PlayStation Network and playable on PSP via Remote Play or PS3 transfer, often conflated with Castle Crashers due to genre similarity.

If you specifically want to use a PSP, titles like The Warriors or Sega Genesis Collection (Golden Axe) offer similar beat-'em-up action.

. If you see an "ISO" file for the PSP, it is likely one of the following: 1. Fan-Made Homebrew The PSP has a dedicated homebrew community

Let’s be brutally honest about the cybersecurity risks here.