Set has set out to destroy Egypt. In order to keep his plans from coming to fruition, Isis needs you to destroy them all before they can wreak having among the Egyptians. The objective is to keep the balls from overrunning the area. You do this by aiming with your mouse and shooting colored balls in to other color balls. In order to get rid of the balls, you must match three or more colored balls and keep holding them off. Failure is not an option and since it gets harder with each level, you must be on top of everything.