Kongregate

http://www.kongregate.com/unity-games

Once the king of Flash game portals, Kongregate also features Unity-made games. Any developer can submit a game to Kongregate, and once the game is live, the Kongregate community can play, rate, and comment on it. If you're a first-time developer, that may sound a little scary. And if you're a veteran developer, you know exactly how scary it is! But an excellent goal for you to set, after reading this book, is to develop something of your own in Unity, and submit it to the scrutiny of complete strangers on a portal like Kongregate. Let's be honest... Mom is going to like everything you do. This may be your best shot at getting honest feedback, and it will help you grow as a developer.