I am playing it since about a week and i find it to be quite intertaining, i started a new char yesterday for the double exp and got to 32 in one day. The bad thing and this is probably what is gonna make me leave the game is the Cash shop that give a huge advantage to the players that use it... to the point that later in the game you must use it.

Also, the economy is messed up because 10 million gold goes for roughly 4$ which is bad for us that doesn't spend money on f2p games :\

Other than that i am still playing it and having fun. I would say try it but you just missed 2 days of double exp :P