Winter!: Prepare for holiday gaming!
While this game gets good marks for being a great idea and very creative, as well as being very simple to play, it has the replayability of... well, a piece of paper and a crayon. Adding something as simple as the ability to specify material (elastic, stone, wood, etc) would make a huge difference.
Game Traits applied to Crayon Physics Deluxe (PC) by Grondhammar