Ian Ward's email:
first name at this domain
wardi on OFTC, freenode and github
Just adding my voice to the chorus of people praising Manufactoria.
I played through a earlier version months ago, but had to come back and try it again. The latest versions let you flip parts and easily move and rotate sections of your machines. And the new "Malevolance engine" jumps straight to your flaws or validates your designs almost instantly. If you like writing software, you must try this little game.
The game and level designers at Nintendo truly brilliant every now and then. When looking for a way to make the New Super Mario Brothers on Nintendo DS more challenging I decided to try playing it with only one of the two primary buttons given to maneuver the little rotund plumber about. I figured that by only jumping and never pressing the dash button that I might be able to beat the game but that most of the secrets would be out of reach.
In fact, all the levels can be completed, 98% of the coins collected and 83% of the secret level exits accessed without ever pressing dash. And the game is much harder (it really was too easy to start with.)