Chris Benjaminsen wrote a simple puzzle game in Flash as a test called Untangle. The current version 1.2 has 17 levels, but will keep you puzzling for a while.
Game play is super simple: Make sure the lines does not overlap. When a line color of an overlapped line is white, when there is no overlap the color changes to gray (which helps you a lot).
When all lines are untangled you move automatically to the next level. Untangle comes with a chilled soundtrack. Happy Puzzling!
Tags: Puzzle Game