Play Lines Puzzle and draw platforms to roll the cannonballs through the level and into the blue baskets. In each level, you have a specific number of lines you can draw. The lines can be as long or as short as you like, but you do need to use them all up before you can release the cannonballs from the chains that suspend them and test your creations. To remove a line, click on the trashcan icon. It'll reset your counter, and you can redraw the line anywhere else. You can still do this once the cannonballs have already been released.