The Guitar Hero franchise is finished. Or at least, it’s retiring, without much hope of a reunion tour. Activision Blizzard just released their latest investor report, and nestled in the fine print — underneath excessive fist-pumping for the monstrously successful World of Warcraft and Call of Duty franchises — you find the epitaph for one of the most influential series in videogame history: “Due to continued declines in the music genre, the company will disband Activision Publishing’s Guitar Hero business unit and discontinue development on its Guitar Hero game for 2011.”