In the name of, er, research, this incredible game is curently being seen on several Click Suite screens.

You have to roll a ball to various flags, which sounds simple enough. To do that you have to draw objects, like other balls, using the magic pen. The other objects will help you roll your ball along, or bridge a gap to get it across a chasm.  It's beautifully engineered, and charmingly rendered as a hand drawn crayon interface.

The thing I think I like the most about it is that the more levels you play, the more it gets you thinking about physics and being a pseudo engineer as you try and build impossible structures across increasing voids and create objects to bat your ball and maximise kenetic energy. It's definitely a brains game, versus the normal games that are stonger on dexterity skills.

Play it and be prepared to be mesmorised (and addicted).  I love my job.