Even if you haven't played it before, there's a decent chance you've seen Plague Inc. around the internet. Usually, it involves seeing a screenshot that informs you your mom has killed thousands of people. If you've ever wondered how you—yes, you!—can also create silly-named diseases that annihilate Earth's population with your Android phone, the answer has arrived! Go here, download the game, then spend 15 minutes staring at the screen trying to come up with something clever. Fair warning: "BieberFever" has already been done to death.
Of course, there is actually a game part to this game. The action is rather slow-going at first, but that's the point.