This game is a challenge, mental training in which you only have to draw 1 line, One Perfect Line will help you develop and speed up your ingenuity and ability to solve problems. One Perfect Line is a free puzzle game, it is very easy to play, you just have to draw a line and join all the points but without having to go through the same place. It is deceptively simple, but really profound. Play through many very extensive stages, sharpen your wit while having fun. How to play One Perfect Line: There is only one rule: "Join all the points with a single line, without having to go through the same path." It does not matter where you start.