Guitar Hero is a series of music video games under Party Games. RedOctane, a subsidiary of Activision first published it on October 28, 2007 in North America with their first entry as Guitar Hero III: Legends of Rock. By now in all, six games have been released for game consoles while others are there for mobile phones and the Nintendo DS handheld gaming system.

The games have individual player modes as well as cooperative and competitive modes for two players making them extremely popular as party or individual games.

The gameplay is a rhythm game controlling frequency and amplitude through a guitar controller. The screen shows an extended guitar neck vertically on it whereas the frets are shown horizontal. As the song progresses, colored markers indicating notes travel down the screen; the note colors and positions representing the notes and positions of the five fret keys on the guitar controller.

The player is supposed to play the notes indicated on the computer screen by holding down the correct fret buttons and hitting the strumming bar in order to score points.

Cooperative modes allow two players to play lead and company on the same song, working together in a cooperative way to earn score. In the competitive Face-Off mode, two players play against each other at different difficulty levels, trying to earn the better of the two scores.

This popular series of music video games under Party Games has already sold 23 million units, earning US$1.6 billion at retail, creating milestones in the history of the music industry.

Associated Deals on eBay

Guitar Hero World Tour (Wii, 2008)    US $10.00

Guitar Hero II (game only) (Xbox 360, 2008)    US $9.99

Guitar Hero II (Sony PlayStation 2, 2006)    US $3.00

Guitar Hero 5 (Sony Playstation 3, 2009)    US $4.50