Greatest free to play MMO , and arguably has the greatest PVP within all MMO.
The PVP is where the game really shines. There are multiple places for pvp( im just going the cover the ones available for prophesis , others become available when you buy the expansion packs) The random arenas where you enter and get setup a random party of four to fight against another random made party of four, maps change everytime you play but theres a limited amount.. After 10 wins in a row in RA you unlock Team Arenas , almost the same as Ra but you get to choose your team. After ten wins in TA you can go to Halls of Heroes( Sry if this is wrong , forgot actual name) There you make a team of 8 and fight for contrl of the Halls of Heroes , here teams fight against other nations ,(example USA vs Europe) After you take over the hall of heroes , you nation controls it until another nation takes it over.
Another good feature in the game is the title feature, after you done some specific task you get a title that can be seen by others for bragging right.
Overall this is a great game that every MMO fan should try. Aslo if you can the expansion are great to try since they add to the pve and pvp.