DJ Hero 2 were released in 2010, both scheduled for the "back half of 2010". Analysts predicted that the market would evolve to support a smaller number of titles each year, averaging at a "healthy" value in the range of $500–600 million in revenues annually. Kotick believed that part of the downfall of Guitar Hero was due to Activision's introduction of DJ Hero, which they gave too much focus and left the core Guitar Hero games without the "nourishment and care" needed to continue to innovate in the series. Activision Publishing chief executive Mike Griffith, in response to questions about Activision's approach to the Guitar Hero market, noted that Guitar Hero continues to outsell the Rock Band series in both number of sales and revenue, with consumers continuing to buy the separate games on the market, and considered the market acceptance of the multiple games as validation for their model. Activision also claimed to have conducted research that showed there was solid consumer interest in products such as DJ Hero and Band Hero, each of which had a markedly different focus than the main installments of the series; series spokesperson Eric Hollreiser suggested the experimental approach would attract players who wanted different styles of music or a different peripheral with which to relate to the music. Regardless, after releasing 25 different SKUs (between games and bundle packages) in 2009, Activision opted to reduce that number to 10 in 2010, recognizing the music game genre was not as profitable as it once was. Activision later opted to suspend future development of the series in early 2011 citing weak sales in the rhythm game genre, a move that many journalists attributed to Activision's earlier oversaturation. List of games See also Alex Necochea and Bryn Bennett: the 'Guitar Heroes' of Bang Camaro on Wikinews "Guitar Queer-O", an episode of South Park Rocksmith, a 2011 video game similar to Guitar Hero that uses a real guitar to teach players songs. Clone Hero, a 2017 clone of Guitar Hero References External links 2000s fads and trends Activision Blizzard franchises Activision games Cooperative video games Drumming video games Guitar video games Karaoke video games Music video games Video games based on musicians Neversoft games TvOS software Video game franchises introduced in 2005