13. Candy Crush Saga
System: Android, iOS, Facebook
Everyone loves candy (well, most people, anyway), and everyone likes an enjoyable distraction that can be accessed at their fingertips. So it makes sense that Candy Crush Saga is as popular as it is. The goal is simple: combine as many similar pieces of candy possible, until you run out of moves or time. The game offers an assortment of different play modes, but it's all about the "Target Score" mode. For those who have sweet fingers, Candy Crush Saga is for you.