https://www.a4at.com/2018/11/30/npd-group-total-industry-consumer-spending-on-video-games-in-u-s-increases-24-percent-to-9-1-billion-in-the-third-quarter-of-2018/
NPD Group: Total Industry Consumer Spending on Video Games in U.S. Increases 24 Percent to $9.1 Billion in the Third Quarter of 2018