4. CastleVille
CastleVille was Zynga's attempt at a fairytale-esque type of social game which came out in November of last year. The game includes elements from the other “ville” games. You the player rule over your Kingdom and can craft armor, build upon your castle and land, and trade items. Along with yourself there are other protagonist NPCS as well as villains/enemies, pets, and other characters.
In the game you must use energy to do things such as cutting the grass and even taxing houses. If only the latter were true in the real world eh? Coins are the in game currency of CastleVill however you can use Crowns, the special currency, to purchase things you would not otherwise be able to. You can also get alliance and castle points in the game. The former you can get every time you do anything in your neighbor's kingdom and can go toward making buildings and items available. The latter is gained when constructing Royal Buildings and enables you to gain new land for your kingdom.