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 Encore: Rocks the 80s
"Guitar Hero Encore: Rocks the 80s" was initially announced by EGM in January 2007 as "Guitar Hero: 1980s Edition". Orange Lounge Radio claimed that the game would be released in June 2007, based on an Activision announcement, though no other source has cited this announcement. Activision officially revealed the first details of the game May 11, 2007, in addition to changing the game's title to "Guitar Hero: Rocks the 80s". Only a few weeks later, the game name was revised again as "Guitar Hero Encore: Rocks the 80s", as official artwork for the game was first released. Nevertheless, the word 'Encore' has been dropped from the title of the European releases.