Offensive Defense

Today we find ourselves in a world which is ruled by artificial intelligence. All was peaceful, but the trouble came. On the planet was attacked by aliens to take over the world to himself a new life. Now it's your task to defend. Use the latest achievements in the field of defense. Get his talent for strategy and build a barrage detachments. Kill the waves of attacking monsters. Earn points and bonuses. For these you will be able to upgrade your weapons. Good luck.