Aliens on the approach to the borders, and you just installed a new defense - two powerful laser cannons: red and blue, and did not have time to test. We will have to do this during real hostilities. To control, use the keys one and three. The color of the gun must match the color of the enemy ship and then the missiles will destroy the targets. Act quickly, you need a quick reaction to control both guns at the same time. Do not miss the enemy, otherwise the planet will end. Use the mouse to rotate the guns. Try to hold out as long as possible in the game Stop the Aliens.