You have a comet witch you drive with your mouse. In order to kill an enemy, your comet must be in the same color of this enemy and touch him. To change your comet's color use the keyboard.
RED : R or A or LEFT
GREEN : G or S or UP or DOWN
BLUE : B or D or RIGHT
You will have Color Shield which prevent your comet do be killed by an enemy with a diferent color.
And, if you are handy, you will have Color Bomb which turn all enemies into your comet's color.
Pause: Esc or Ctrl
v1.38
Key A S D added!