Maybe I suck at finding gameplay, but all I could do is train the duck, and dispense food. You gain hats and colours through winning, so there is no much need for the money except energy levels and rising level limit. It's a shame, because I always liked buying stuff in those games. Also I don't like watching how the game play itself. I thought it's ought to be my win, not a win of two circles and a hat.
Either add some gameplay, improve graphics to distract me, or add some funny ideas for duck development, because I feel I've been cheated out of 10 minutes of my life.