CastleVille Unofficial Guide by Mongoose General for SuperCheats.com
CastleVille is another hugely-popular Zynga game on Facebook. It is free to play, with premium currency and purchases making the developers money. It follows a similar theme to Zynga's other 'Ville' games, but with a medieval theme!
As with most Facebook games like this, keeping your Energy levels high, combined with managing resources and spending plenty of time visiting and interacting with your neigbors, are all crucial.