I've got Guild Wars Prophecies, Factions and Nightfall, However, in my opinion, Guild Wars is one of the worst games ever. I mean.. all you really do is Farm, Train, have Wars and do Quests..
By far, the best thing about it is the no monthly fees and the graphics, they are pretty awesome.
If anyone out there is looking into buying it, i strongly recommend you don't. but hey, thats just my opinion -.-