The most ridiculous time waster!
 

If anyone mentioned this simulation, I apologize, but the object of this game is to create a track for a snow sledder with pure lines. What's cools is that is has a nice physics engine so the sledder will react with pretty good real world physics.

Play the game here:
http://www.official-linerider.com/play.html

And here is a video of the most unbelievable track created for it:

By the way, this is probably best used with a Stylus Pad or something similar. It is hard with just a mouse.

I've messed around with this before, it's a lot of fun and harder than it looks. That's gotta be a gimmicked video though -- wouldn't the sled run into some of those vertical lines it goes through?

No....with the new beta version, you can create lines that are there for artistic purposes. Wasn't true with the old version, but the new one has more bells and whistles.

Ah. I think I must have played with the old version. It was a couple months ago.

Somebody has too much time on their hands.