High Quality Content by WIKIPEDIA articles! Guitar Hero Encore: Rocks the 80s (Guitar Hero: Rocks the 80s in Europe), is a music video game developed by Harmonix and published by RedOctane and Activision in 2007 for the PlayStation 2 console. The game is considered an expansion of the Guitar Hero series and is part of Activision`s goal to expand the series into genre or band-specific titles.Rocks the 80s was sold without a peripheral, unlike Guitar Hero and Guitar Hero II which were sold in a bundle with a guitar controller.