Fill Line Game on Lagged Fill One line up the empty spaces/flow free fill to complete each Line level. You can not overlap any spaces you have already filled, so think ahead so that you can complete each level with a single line. The Line levels get progressively harder so try to relax and solve each puzzle. Can you complete all 36 levels in this fun online puzzle game? How to play: Click or tap and drag to fill the empty line spaces. It's Day line time to sharpen your mind with a 'connect the