Dont remember where I found this clip, hope it is okay to post it. It shows some of the huge undertaking it was to create a game like Outcast. And no, I'm not, and never was, affiliated with Appeal or Outcast. I'm just a fan.
If Outcast had one fault in the story, it was setting it in the not-too-distant future from 1999; the year 2007, now in the past.