Over the last 10-15 years players have seen little evolution in MMORPGs. Classes, combat, and quest systems generally are extremely similar even across the usual sub-genres; fantasy, sci-fi, and horror. Due to most releases up to this point reusing the same foundations with slightly different graphics the experience playing them is nearly identical across the board. This is partially why every game is called a “WoW clone” even though World of Warcraft was an Everquest clone which was a DIKU mud clone and so on. Guild Wars 2 seems to be trying to break the mold in many ways, most notably the dynamic event system at the heart of their game.