There's a trick to it. I finished L10 in about 5 minutes, and 19 in about 30 before stopping last night, and at that I must've been slowing down because I was tired. L20 only took 20m this morning. What you do is to look for a ball with only 2 connections since that's an edge piece. Move it to the edge of the screen and then start building the network systematically from there, remembering that anything with less than 4 connections is an edge piece. You can get about 80% of the balls in place just creating a grid with one at each point; in theory I suspect you could shuffle it so they all fit; but eventually errors will result in the edge getting rather messy. Looking at the results from skipping I think I got to level 30+ at one point; but that was pure boredom/procrastination grinding.
Did you ever see history portrayed as an old man with a wise brow and pulseless heart, waging all things in the balance of reason? Is not rather the genius of history like an eternal, imploring maiden, full of fire, with a burning heart and flaming soul, humanly warm and humanly beautiful? --Zachris Topelius Training a telescope on one’s own belly button will only reveal lint. You like that? You go right on staring at it. I prefer looking at galaxies. -- Sarah Hoyt
