War of the Worlds - MAME - Shooter

This is one great looking game. You control a little tank that can move back and forth at the bottom of the screen, your enemies are martian walkers that advance on your position. Each martian takes several hits to destroy, as you are actually blasting their legs out from under them. You can protect yourself from their shots by using your shield button, but use it sparingly, as you only have a limited amount of shield time.