Seriously, why hasn't a video game been nominated for the Hugo and…

Of all the landmarks in science fiction history that we predicted would happen in your lifetime, there's one that I really can't believe hasn't happened yet. Why hasn't a video game been nominated for a Hugo or Nebula Award? With games like Dead Space, Bioshock, Mass Effect and Portal featuring complex world-building… » 1/11/13 2:40pm 1/11/13 2:40pm