JezzBall is a game that was originally included in the Microsoft Entertainment Pack. Your objective is to claim at least 75% of the game area, while avoiding balls with the lines that you create. A line will expand horizontally or vertically until it hits a wall and becomes a boundary. If a ball touches a line before it becomes a boundary, the line is destroyed and you lose a life. Left click to create a line. Right click to toggle between horizontal and vertical lines.