The quiet launch and viral success of pandemic simulator Plague, Inc
Plague, Inc is one of the hottest games for the mobile market, and has proven to be a successful venture for Ndemic Creations. The CEO of Ndemic has even been invited by the CDC to speak about how the game models infectious disease. Yet, as Alexander points out in her article, this game isn't exactly unique; Pandemic 2 is several years old, and plays quite similarly.
It's fascinating when things like Plague, Inc become popular, and context Alexander provides for its rise to fame show that sometimes just a little bit of marketing magic - or lack thereof - can make or break your game.