COLOR SPACE INVADERS

HOW TO PLAY

A 'rack' of invaders will appear on the screen. You must destroy them all before
they drop a bomb on you or they read the earth (bottom of the screen). You start
the game with four bases and lose one every time you get hit by a bomb. Invaders
are destroyed by firing missiles from your base. The base is moved with the right
and left arrow keys and the missiles are fired by hitting the space bar. The game
will automatically start a demonstration game if you do no answer its questions.
You may escape the demonstration game by typing ENTER.

SCORING

Points are scored for each invader destroyed: 10 points for invaders in the bottom
two rows, 20 points for invaders in the middle two rows, and 30 points for invaders
in the top wto rows. A 500 points bonues is scored for each 'rack' destroyed. The
mother shipp which moves across the top row of the screen is worth a variable num-
ber of points up to a maximum of 300.

LEVEL OF DIFFICULTY

At the beginning of the game you select the level of difficulty you wish to play.
As the level of difficulty increases, you have fewer missiles to fire, the invaders
move faster and your base become a bigger target.

SHIELD

The shield is the blue (sometimes red) line just above the castles. Missiles will 
go through the shield by bombs will explode when they hit it. When hit by a bomb,
the shield will be inoperative for about three seconds. The '1' and '2' keys controls
the motion of the shield.

MYSTERY INVADER

The mystery invader appears and disappears at random intervals. It always appears on
top of an existing invader and is worth 100 points. The invader upon which it appears
must be shot before the mystery invader can be destroyed. An audible signal will
alert you to the appearance of the mystery invader.

HYPERSPACE

Pressing the 'Y' key will cause the base to move inter hyperspace.

JOYSTICKS

The joysticks may be used to control the movement of the base and shield. Pressing
the 'X' key will activate the joysticks. Pressing it again will return control to 
the keyboard. The joysticks operate as follows:

  RIGHT JOYSTICK: base movement
  LEFT JOYSTICK:  shield movement
  RIGHT BUTTON:   fire missile
  LEFT BUTTON:    hyperspace