#2 Candy Crush Saga
Candy Crush Saga is, by far, one of the most popular games on Facebook. Released in 2012, it still manages to entice social gamers. As of 2013, over 500 million people have played Candy Crush Saga at least once on Facebook, Android, and iOS. And yes, there’s also an app for the game that you can download on your smart device. The rules are simple: you have to switch candies to match at least three of the same type. With over 590 levels, the creators of Candy Crush Saga are constantly updating and expanding the game to keep gamers interested.