CastleVille isn't the kind of release that will revolutionize social gaming. It doesn't remake the wheel or have any crazy ambitious concepts. It's a game that sits firmly in the framework already established by games like FrontierVille and Ravenskye City. But thanks to some subtle but very welcome tweaks and arguably the best visual and audio experience on Facebook, it's still a great game. It may not be the most original, but it's definitely one of the best.