In this strategy we will defend forest road with four types of tanks. Each can do something. When you move the arrow on the icon of the machine will display a short description, including price. Beyond that, the later you have to do yourself. Waves of invaders follow each other smoothly and aliens are getting stronger. For the destruction of the vehicles initially do not expect too much finance, so they are very important positions that you choose for the first couple of defenders. Furthermore you keep adding. You may upgrade your tank. However, the upgrade will cost you nearly as much such as a new tank. A freak doesn't have a sound and may seem for someone less dynamic feel.