Guitar Hero Smash Hits (titled Guitar Hero Greatest Hits in Europe and Australia) is a music video game and the fourth expansion game to the Guitar Hero series. The game features 48 songs originally featured in five previous games in the series (Guitar Hero, Guitar Hero II, Guitar Hero Encore: Rocks the 80s, Guitar Hero III: Legends of Rock and Guitar Hero: Aerosmith) redesigning the songs to be based on master recordings and to include support for full band play. Source: Wikipedia, Guitar hero smash hits , available under the CC-BY-SA License.