Lines game to play online is an addicting puzzle game where the player is challenged to keep the board empty by strategically eliminating lines of five balls of. Lines. To move a ball, click on it with the mouse (circle will appear) to select it, then click on a free cell in a field. To deselect a ball just Game goal is to arrange balls of the same colour in a straight lines (every direction). 5 or more balls on a. Play Number Lines free online on our site. This game classic is tons of fun check it out now.