Battlejeep - description from Softdepia.com:
Battlejeep is quick, simple, and highly addictive arcade-style game. Take control of rocket-armed military jeep and fight against the enemies - helicopters armada, consisting of the helicopters of several types, each of which with its own specific powers, e.g. increased bomb load or more accurate targeting ability.
You?d better prepare for the hard battle! Enemies have several types of helicopters and each of them has its own special abilities. The salient feature of the game is its wonderful effects, sharp graphics and cool battle music. Enjoy the fighting game of Battlejeep!
The game requires DirectX version 6 or higher and successfully runs under all Windows versions except on Windows NT.
Battlejeep is a "Free to try" program. You can download and try it for an evaluation period.