Guitar Hero
In 2015, Activision announced the first new title to the series in 5 years, "Guitar Hero Live", released in October 2015. The title is considered a reboot of the series, with development being performed by FreeStyleGames, who had developed the "DJ Hero" games previously. As of December 1, 2018, Activision disabled the GHTV servers for Guitar Hero Live, reducing playable content from approximately 500 songs to 42 on disc tracks.
Guitar Hero
The series currently has ten major releases (seven "Guitar Hero" games, two "DJ Hero" games and "Band Hero") and five expansions on gaming consoles. There are spin-offs for Windows and Macintosh systems, mobile phones, the Nintendo DS (the "" series), and an arcade game. The "Guitar Hero" franchise was a primary brand during the emergence of the popularity of rhythm games as a cultural phenomenon in North America. Such games have been utilized as a learning and development tool for medical purposes. The first game in the series was considered by several journalists to be one of the most influential video games of the first decade of the 21st century. The series has sold more than 25 million units worldwide, earning US$2 billion at retail, claimed by Activision to be the 3rd largest game franchise after the "Mario" and "Madden NFL" franchises; the third main title of the series, "Guitar Hero III: Legends of Rock" is also claimed by Activision to be the first single video game title to exceed $1 billion in sales.