Line By Line is a free puzzle game developed by W00dy for Android devices. The game is categorized under the puzzle genre, and it features the Ghost-leg rules.

The gameplay is simple and easy to understand, making it suitable for all age groups. You are presented with a grid of dots, and your objective is to connect them by drawing lines between them. The twist is that you can only draw the lines according to the Ghost-leg rules, which means that you have to draw the lines from one end of the grid to the other end in a single continuous line without lifting your finger off the screen. The game has different levels of difficulty, and each level presents a unique challenge that will keep you engaged for hours.