Neat little technical demo! I think upgrading this from a tech demo to a game would be adding a lose state or a "win more" state; it's merely an interactive "click to the end" thing now. But that's not a bad thing! The ambience of the game is great with the background music! I liked the art style and all the mechanical things you've added in the game. If you added more levels, and added puzzle mechanics, then you're on your way to a great puzzle game. Great work!