Research from the Nielsen Company shows a moderate decline in mobile game usage, with 17 million mobile game downloaders during the second quarter of 2008, compared to 19 million in the previous quarter. The 17 million mobile game downloaders represent 6% of all wireless subscriptions, and a 19% decrease in year over year growth since Q2 2007. Tetris, Bejeweled, and Guitar Hero III were the top three game titles by revenue share according to Nielsen's latest Mobile Media report, which tracks the consumption of mobile messaging, Internet, video, games, audio and applications. Puzzle/Strategy remained the most popular category for games, followed by Action/Adventure and Sports/Racing.