If ordinary puzzle games can no longer satisfy your pursuit of challenging levels, then Lines On Sides is undoubtedly your best choice, this game has addictive challenge levels and innovative puzzle gameplay. Lines on Sides is a puzzle game to arrange the tiles so that their sides match each other in colors. Black lines appear when the sides are properly aligned. Your task is to arrange the tiles correctly so that each side of them is the same color as the adjacent tiles. When the tiles are properly arranged, black lines appear between them.