Best free game on the Internet.
I am not going to get into the fine details of the game because there is no finical risk to giving this game a chance. Download it and play. Worst case scenario is some wasted bandwidth.
But really, rolling around in a tank, blasting other guys away, getting experience and credits to upgrade and purchase more is a great system.
You have the option to spend money on this game to gain gold, but aside from a few special tanks, there is nothing you can't get for free, and the tanks which cost gold, are nothing special.
Something about this game calls out to me and it is not hard to figure out what that is... I LIKE BLOWING STUFF UP!
One of the best games ever made if you have 5 to 10 minutes to kill and nothing to do, or an afternoon to lose yourself in this instant classic.
Have fun and happy hunting!