Example Search and Suggestion for a Challenge
I am trying to locate an example I saw a month or two ago. It was on electricity and what happens when you change certain variable like voltage and resistance...I think. It had a very 1920s style.
I don't think this has been done yet, but how about a challenge focusing around the "escape from" genre of games. They can range from very basic (http://www.kongregate.com/games/afroninja/escape-2-the-closet) to very involved (http://www.newgrounds.com/collection/aliceisdead).