obsessions 'r' us
12 Jun 2012 12:44 amThis is my "Obsessive" icon. I've been playing an iThing game (also available for Android) called "Trainyard." There's a free version (Trainyard Express). Both contain hours worth of puzzles and tutorials that make it easy to learn. You can also post your solutions on the web.
http://www.trainyard.ca/
http://www.trainyard.ca/