The only thing cooler than a million dollars is, well, a billion dollars. Fortunately for social game creators, that’s just how much the industry is set to rake in this year. Indeed, it’s big business, and it’s not just for Internet nerds. In fact, one out of every five Americans over the age of six has played an online social game at least once — that’s 56 million people, all told. Zynga alone has 232 million monthly players and nearly $600 million in revenue, and the industry is poised to keep on growing. Check out the infographic below to learn more about the economics of this booming industry.