So far, so good. But not as good as I initially thought.
However, the problem I now have with the game is that once you upgrade your initial light tank, there seems to be a huge gulf between the players who pay and those who do not. When I started this game I was able to destroy a couple of other tanks every game but now, after upgrading my tank and advancing into the second round, almost -all- of my rounds bounce off the enemy and I am invariably killed.
Still, there are positives to be found here. The battles are pretty short and about 13000 ppl are online each time I have logged on. That's great for a FTP game. And, lag isn't bad at all, and, as I am in the middle of nowhere Western Canada, I'm happy with that as well.
Anyway, the price is right so give it a try if you want to experience the cat and mouse gameplay of the tank battles while "developing" your particular tank of choice in a lot of different ways. Just don't expect the same amount of fun after the first 20 hours unless you are willing to pay.