Infomation: Grey Wars: Alien forces are attempting to steal cows from our barns, and it's your job to stop them. Build a variety of turrets to destroy the invaders. Research new technologies to improve your military capabilities.

How to play: Click on turrets to upgrade/sell.Click on turret in build area or press 0-9, - to select a turret to build.Space to select an air strike.Hold W while clicking to quick upgrade.Hold R while clicking to replace.Hold S while clicking to sell.Press T go deselect turret.