Answer: guitarhero

AnswerCrossword Clue
GUITARHEROPopular video game series discontinued in 2011
GUITARHEROVideo game that comes in a World Tour version
GUITARHEROHit video game series launched in 2005
GUITARHEROHit video game series featuring "hammer-ons"
GUITARHEROPopular musical game beginning in 2005
GUITARHEROHit video game in which it's really easy to be one button off
GUITARHEROHit video game series since 2005