Hmm, site seems to be down now. 2k has this bare-bones site:
http://www.2kgames.com/games/prey which contains a (now broken) link to
www.prey.com.
If anyone is interested, there were some interesting development diaries at the original site written by Human Head, which are still (mostly) accessible at the internet archive:
http://web.archive.org/web/200805200...producer_1.htm