Surpringly addictive
I must admit that I have quite a fondness for all military type games, and this one has taken all my time up recently.
The gameplay is just downright addictive, and there is nothing more satisfying than blowing up an opponents tank. As a free game I was a bit sceptical that it would be hard to keep up with paying players, but this hasn't proven to be the case. The whole thing is handled very fairly.
The initial install is a bit of a chore, but after that it is very quick to get into a game and start blasting away. The learning curve really isn't steep at all, and you'll find you get to grips with it quite quickly. There have been server issues, but these have been fixed very quickly and the producers have kept the players informed every step of the way.
You can team up with three of your mates which makes it more rewarding, and I can see this getting better and better over time as they add to the core game.