Why was there such a media storm over Flappy Bird? Why is the upcoming IPO of King getting so much coverage? Maybe because mobile game apps are becoming the dominant force in out culture. According to a new survey by App Annie, consumer spending in-game apps has soared to more than double the size of spending on digital music. The survey covers the United States, the big Euro markets, Japan and South Korea. The annual growth of consumer spending on game apps is still a titanic 130%. The annual growth of digital movies and digital music is stuck in the relatively anemic 10-20% bracket. Looking at the App Annie survey trend lines, by the summer spending on game apps will