was never officially released for the PlayStation Portable (PSP) by its developer, The Behemoth Official Platform Availability
There have been "homebrew" attempts by fans to recreate the Castle Crashers aesthetic in simple PSP games (using engines like Lua or Quake), but these are usually just one-room demos and not the full game. Always be cautious when downloading unofficial homebrew files from unverified sources. castle crashers psp iso upd