"Line Rider" the birth of next gen gaming/living

Has anyone tried out this new flash game called "Line Rider"? My friend introduced me to the game for the first time yesterday, and it is a remarkable game because it is so simple and yet the most complex game I've ever played. The site is at:

http://www.deviantart.com/deviation/40255643/

The point of this game is to draw the course of a "line rider" who will follow the path you draw. The thing is it follows certain laws of physics, and so the course has to be drawn intentionally. Once you play this game, you'll begin to understand just what can be done because the sky's the limit. Check out this site for what can be done

http://www.youtube.com/watch?v=297vU81nW_s

There are so many interesting questions regarding this game that came up as I was trying it out. For one, the game is interactive, but it's form of interactivity is different from games I've played before. There seems to be some sort of open endedness to it that is freeing compared to so many games I've played before. How come this is so? Is the creator the author of the content of some of the line's drawn for this game since he came up with the concept, or is the user an equal creator of this process, or do they have different roles? How does this game play with and represent time and space? What is the next step for a game like this?

Anyway, definately try out the game and check out the youtube video. It's quite fascinating and it might be your new best procrastinating friend.