A free app for Android, by Brain Vault.

Welcome to the desert battlefield of the future! The battlefield is not a playground for tanks, it is harsh and rugged terrain where you must fight against enemy soldiers. There are no friendly forces, no band of allies, you are alone! Fight against the enemy, survive and get better weapons!

The controls in Tank Simulator HD are easy to use. In the top right of the screen you have the aim of your tank, just tap the screen to fire and tap again to reload your gun. On the left side of the screen you have the control for movement.