PlayTM writes: "In musical terms, the appearance of a Greatest Hits album can be seen as many things, a celebration of achievement, an acknowledgement of longevity or a gateway for new fans to discover the artist in question. However, more often than not it's really all about easy money. It makes perfect sense from a business point of view; with minimal effort established acts can rack up massive sales with a well marketed compilation from their back catalogue... easy money. It's not really been a business model that's worked for games up to now, although retro releases often prove popular. However, the ever increasing popularity of the music game genre could see all that about to change. It would seem Activision feel rhythm action trendsetter Guitar Hero has now been around long enough and achieved enough success to warrant a Greatest Hits release all of its own, the question, rather predictably, is can it be more than a cheap cash in?"