We could have waited until it hit 1 million for the sake of the bigger headline, I suppose. But I wanted to say something: the success of zombie mod Day Z couldn’t have been predicted. It was a one off. A outlier. It’s one of those rare and beautiful times when a game design experiment explodes into a phenomenon. No one can plan for that to happen, not really. But I can predict one thing: the companies that do not support modding will never have a zombie mod sell hundreds of thousands of extra copies of their game