Wow, these could be slightly shopped photographs. Except for some of the lame textures they used, and the visibly non-spherical domes there is not a lot to improve here. I suddenly want to play an RPG in this setting.
All you guys have to do is look around on ModDB to see the true power of the CryEngine 2. I'd even go as far to say that some of the work on there is even more amazing than this (And then, also, those are more than just environments, they're being shaped into games).