It's good for student projects, but not for actual games. Take some examples like StarForge, Only If, Air Control, the list of god-awful games goes on.
EDIT: There was ONE game that was supposedly really good, and it was made in Unity. I can't remember the name, though. Found it, it was the Forest.
I understand your point, but, especially since it is made to be more easily accessible, there are, of course, stuff games, but you don't really know if they're stuff because of an engine limitation or just a bad developer, know what I'm sayin'?
Also, Kerbal Space Program is pretty good.