I like the idea, but I would add in the ability to close the art with the space bar, so you don't have to alternate between the mouse and the keyboard. I'm not sure there's much point to the walking around. It might work better as an actual calendar so you can click each day to see the the next one. An actual adventure where you have to find the new picture each day would be a cool alternative, as well--like a little map to explore or something? Not much going on at the moment, but the art pieces are nice.