Marble Lines Game OnlineMarble Lines is a free Online Game at Infofully. This is a free Mouse game in which you will learn about the use of mouse and practice the click accuracy. There are marble lines coming from one side and after round, they will enter an exit hole. If these marbles reach there, the game will be over. You can aim and shoot the ball to make a set of 3 same colored marbles to remove them. However, you can swipe the color of the ball into the canon as well. Math Lines is also a free game here. Play muted. Game Controls: Mouse to aim and shoot | Spacebar to Swipe the ball.