Laser Tank - 
Laser Tank allows the use of either keyboard or joystick input.
Keyboard input is more challenging, as you control the left and
right tracks of the tank separately. Five keys are used to operate
the tank:
    A    Left track forward
    Z    Left track Reverse
    L    Right track forward
    .    Right track reverse
    Q    Fires the laser
Joystick #1 can also be used to control the tank. The tank will
travel in the direction the joystick is pushed, and the laser is
activated by the Fire Button. 

When the target tank is not within the Video Cone, its location is shown as a blip on the
Radar Screen. Your position is in the center of the screen, at the bottom tip of the Video Cone. Up on the
screen is directly in front of you, down is directly behind you. The blue line at the top of the screen is a
direction indicator. This indicates your tank's orientation, just as a compass would. Also displayed on this
screen are the numbers of enemy and friendly tanks left.

When the target tank enters the Video Cone , the Video Screen replaces the Radar Screen
on your television. To destroy the enemy tank, you must maneuver your tank so that the site is on the
target, and then fire the laser. The CIREV can not be aimed except by changing its orientation. If you are
accurate, the enemy tank will disintegrate before your eyes in a blinding flash.
As on the Radar Screen, the blue line at the top indicates your tank's orientation. In addition, a brown
line along the bottom shows the range (distance) of the target. Target range increases to the right, and
decreases to the left.

There are three levels of difficulty in Laser Tank. Enemy tanks can and will fire upon you. In order to
avoid being destroyed, you must stay behind the enemy tank and out of its site. With increasing difficulty
level, the enemy tank becomes more active in pursuit, and gains accuracy. Maintaining motion across his
line-of-fire also makes it more difficult for him to shoot you. In general, if you are directly behind or
directly in front of the enemy, you are a sitting duck.
Both you and the enemy receive three tanks at the beginning of the game. Game progresses until one side
is wiped out. Every time the enemy tank is disintegrated, or goes out of range, subsequent adversaries will
fire and maneuver faster.