Zynga

For those not familiar with the game, Mafia Wars is a Myspace game, produced by Zynga, that has garnered massive popularity since its inception. In Mafia Wars, you are the leader of your family. You build up your family, equip them with attack and defense items as well as vehicles, and fight with other families in the game, building your character up as you go with stronger attack, defense, health, energy, and stamina.