There's a whole world of Unity games out there and lots of ways to find them to play to see what can be done and to get your games on for people to discover.
Code Hero Arcade Share and play games created by fellow Code Heroes
UnityPeeps Share and play games created with Unity
Kongregate Unity Games Kongregate is an amazing portal for games with achievement and monetization built in
Multiplatform Game Lists
Unity Games List Unity's big list of Unity games for all platforms