Description: The goal of the game is to protect your software from harmful threats: adware, spyware, viruses, etc.
To kill security invaders you must build security shields on the game desktop. All invaders, except viruses, can??€�t go through the shields.
Instructions: You must place shields on the desktop to change movement direction of the invaders and to force them to pass longer way, to give your shields time for destroying threats.
