Horrendous controls
A couple people have mentioned it, but I want to be very clear about it: this game is unplayable without an external mouse. Yes, you can customize the keyboard layout, but it really doesnt help the situation at all. Its very strange because they give you buttons to turn the turret, but the gun still snaps back to wherever you have the mouse aimed. You would think they could have an all-keyboard control setup, but it is suprisingly missing. This game is frustrating and impossible to play with a trackpad. A simple option to remove mouse aiming would solve the problem and make this a fun game to play on the move (which is why I bought it) when you dont have room to set up an external mouse.
That being said (and assuming you have an external mouse), the game itself is fun. The free-for-all tank battles are fun and remind me of a much better version of the old Atari 2600 game. If they would fix the controls, I would happily give the game 5 stars.
EDIT: Taking away another star because I tried using my Xbox 360 controller and its even worse. The game claims gamepad support, but it definitely does not. I know theres nothing wrong with my controller or drivers because it works wonderfully on Portal 2.
Skreba about Tank Battles, v1.0.0