Fierce marketing my ass:
We did not have an ad budget. We didn’t have a physical copy to load onto shelves, no worldwide multimedia push, no studio reputation with millions of followers. All we had was what we believed was a great game and a great community. And make no mistake, a solid game is not enough, not in 2013. Plenty of great games wither away in obscurity. This train got rolling because you got out and pushed.
http://undeadlabs.com/2013/06/news/breaking-records/







