Alien Assault is a Fast Paced Defense shooting Game. Hundreds of alien creatures are trying to invade and blow up your base. It is good that you have soldiers as well as your own guns to help you defend the building. At the start of each wave of attacks you will be shown where the invasion is coming from, so use those few seconds to rearrange your troops and give them orders, you can do this by holding the left mouse key down over the character. Watch your ammo level, once it’s gone, you will have to look for pickups.