While you're waiting for The Division, you can get up to speed with the game's backstory – and bring about the end of the world yourself – in Collapse.
It's not quite a game, more a simulation you have some input into – and it's all done with the aid of location data, meaning just now I managed to infect 31 people on the way to my local hospital. Huh.
Ironically, it's the kind of tie-in thing that would be pitched as something to go viral. Ah, the hilarity.
I managed to bring about the collapse of the entire planet in 23 days, 14 hours and 17 minutes, with over 654 million people dying. Huzzah!
If you're looking for something that's more of an actual game – and one in which you're the virus itself, trying to spread as much as possible around the world – might I recommend Plague, Inc. Great fun, all that genocide.