I played it a bit last night and thought it was interesting. I just played the Escape part and haven't got to the Novel part yet. The touch screen control worked well. Not sure of the puzzles, some are really easy and some seem really abstract. It kind of reminds me of Myst.
I played both parts, as they're rather short. The novel part is simply an intro to the controls, and doesn't offer much in the ways of the story. As for the escape mode, the demo did only contain easy mode. The full game will default to hard mode. I defnitely prefer using the triggers to rotate the camera rather than swiping on the touch screen. I'm pretty happy with the demo, and am excited for the full game. It felt very familiar, but very new at the same time.