Pretty neat idea. I enjoy it.

Couple minor points. Please have an option to disable all the sound, not just music. The shake to jumble is a bit too sensitive on my Droid X, not sure about other phone. I play games on the bus a lot and one bump jumbles everything. The colors seem a bit washed out to me on some things. Not sure if my screen or if it's the Brightness/Contrast/Tint ratios. Pretty fun though ^_^