Another amazing find on Vimeo. I'd totally play in this setting:
Great martian war from PLAZMA on Vimeo.
Also worth showing off, Fortress, a one-man production that makes me wish this was a trailer to a very eerie post-apocalyptic movie or game:
Крепость/Fortress from Dima Fedotof on Vimeo.
Keep in mind that one guy did Fortress just for the hell of it (okay, his love of CGI).