You control the ghost with the mouse, clicking will make him blow air in the direction he is facing which will propel the bubble. Direction of the ghost is controlled by the arrow keys, the right arrow key making the ghost turn clock wise, the left arrow key, counter clock wise. The object of each level is for the bubble to pass through without bursting. The shit didn't hit the fan, because it was turned off. The IIgs version is fun, cute and neat.
Bubble Ghost shows what can be done with a simple concept.