Inevitably, most Facebook users took their maiden voyages into social game-based applications through such compelling challenges as "Dear victim, you have been bitten by (insert friend's name here)...".
But once you become a "Zombie", "Werewolf", "Vampire" or "Slayer" and plague all your other friends with viral messages, at what point do you all grow tired of it? Turns out...pretty quickly!
Many companies creating such applications on Facebook and other social networking sites continued with this futile theme, expanding it to the "Wars" generation where you and your friends can rally together against other chumps in worlds of Mafia, Mobs, Fashion, Dragons... the list goes on!
Source
Facebook games can be played on the net for free.
