Check out the above interior design work for videogame development company Three Rings. I found that and other photos on the Because We Can blog (Link), which is maintained by the people who did the work. Cool stuff and worth checking out.
The other thing I found of interest while surfing through was a separate post on the BWC blog (Link) in which they mention using Blender, the open source 3D modeler, for some of their work (not a lot, but some). In particular, I was unaware that a sculpting plug-in ala ZBrush was in the works for Blender. Good to know.
{Image Copyright © Because We Can, LLC }