Pretty cool game so far. Not just a poke the ninja game but actually gives you things to do. I think that was a great idea. I have been wanting to try this since I saw it on a recent Apple Keynote. Very good graphics that I can visually enjoy. :)
Just FYI, to "Head Stroke" him you tap and hold down near the top of his head till he squints and then while keeping hold of him swipe down then up a few time.