GUITAR HEROS

Guitar Hero III: Legends of Rock was released in late 2007 for the PlayStation 2, PlayStation 3, Xbox 360, Wii, PC, and Mac platforms. The title is the first installment of the series to include wireless guitars bundled with the game and also the first to release a special bundle with two guitars. The game includes Slash and Tom Morello as playable characters in addition to the existing fictional avatars; both guitarists performed motion capture to be used for their characters' animation in the game.
On September 4, 2007, Billboard announced that the band Aerosmith was "working closely with the makers of Guitar Hero IV, which will be dedicated to the group's music."[17] On February 15, 2008, Activision announced that Guitar Hero: Aerosmith, an expansion game to the series, would be released on June 29, 2008.[18][19][20] Guitar Hero: Aerosmith is developed by Neversoft for the Xbox 360 and PlayStation 3 versions, while the Wii version of the game is developed by Vicarious Visions and the PlayStation 2 version is developed by Budcat Creations.[21] The game features a track selection composed of 60% of Aerosmith songs, with other songs from Joe Perry's solo work or artists that have inspired or performed with Aerosmith, including Run D.M.C..
Guitar Hero World Tour, previously named Guitar Hero IV, is the fourth full game in the series and was released on October 26, 2008 for PlayStation 2, PlayStation 3, Xbox 360, and Wii. Analysts had expected that future Guitar Hero games in 2008 would include additional instrument peripherals to compete against Rock Band;[22] Guitar Hero World Tour was confirmed as in development following the announcement of the merger between Activision and Vivendi Games in December 2007.[23] Activision's CEO Bobby Kotick announced on April 21, 2008 that Guitar Hero World Tour will branch out into other instruments including vocals.[24] Guitar Hero World Tour includes drums and vocals, and can be bought packaged with a new drum set controller, a microphone, and the standard guitar controller.[25] A larger number of real-world musicians appear as playable characters, including Jimi Hendrix, Billy Corgan, Hayley Williams, Zakk Wylde, Ted Nugent, Travis Barker, Sting, and Ozzy Osbourne. Guitar Hero World Tour also features custom song creation that can be shared with others.[25]
Activision's 2008 SEC filings cited that they plan to release Guitar Hero: Metallica by the first quarter of 2009, according the Wedbush Morgan Securities.[26] Guitar Hero: Metallica is based on the full band experience of World Tour while offering similar features on Metallica's history and music as found in Guitar Hero: Aerosmith.[27] In addition, Metallica's album, Death Magnetic, was available as downloadable content for Guitar Hero III simultaneously with the release of the album, with the content being forward-compatible with Guitar Hero World Tour and Guitar Hero: Metallica.[27][28]