When searching for a "ROM" for the PS3, you are typically looking for one of two formats:

Insert the USB into the right-most port of your PS3. Install: Enable your HEN (if applicable).

Castle Crashers is the ultimate couch co-op experience. Whether you're leveling up your Red Knight to spam lightning or hunting for hidden animal orbs, the PS3 version is a fantastic way to experience the game. By following the right installation steps for your ROM, you'll be crashing castles in no time.