I added a timer so the player can race the clock, as well as particle effects, sounds, and a few other surprises. I probably would have added more, but I'm also doing the Create with Code Summer course, and wanted to focus on my personal project for that... still, if I have time I may add a bit more to this game before the last session tomorrow morning. (I started a game development blog about my Unity learning process and the games I'm making with it; it's at http://www.kamawale.net .)