Play Winter Olympics 2014 Game on YouTube with Webcam or Keyboard

As part of the promotion of the next Winter Olympics (Winter Olympics 2014, which will be held at the Russian city of Sochi on February 7, 2014), they’ve produced a smart skiing game that can be played on YouTube.
When you first enter this YouTube page you’ll see a video showing examples, but then it flips round to give you a skiing game that you can play with your webcam or keyboard keys.

Enjoy the game! here.