Unity3D Game Engine getting traction

I have seen some really fun 3D games in the past few months, and I have been astounded to realize that the vast majority of those were written in Unity 3D

To get an idea of just how cool / amazing they can be, check out the Dukateers game above. To see some more games and look at the kinds of things people are developing, check out this site: http://unity3d.com/gallery/developer-profiles/web-games/