Its an ok game, it can be fun to play in short bursts. There isnt an open world to explore , everything istanced.
There is only one 5v5 pvp mode and some guild 20v20 PvP/PvE mode. It just doesnt have that MMORPG feeling like all other MMORPGs have. But it is popular there is tons and tons of people playing it.
It can be fun, i got to level fourty, but the dungeon and loot aspects are severly lacking. Their's about ten items that drop per dungeon, then another ten available through tokens you gather whilst running through them. If you're into loot like me i'd suggest giving it a pass :s