Pretty Nice! I liked the "alone-in-the-darkness" style of the goal images.
One thing that caught me by surprise is the direction of the ball when you released it... I was expecting the ball to continue travelling the path that it was going when it was released (like a pendulum), but it travelled the direction that it was faced. After a while I got the hang of the difference, but I wonder if there is a way to preserve affordance more easily in this mechanic...