trailers and vids...
http://media.pc.ign.com/media/707/707640/vids_1.html

http://en.wikipedia.org/wiki/Bioshock#Engine
[quote:ade395cc78]BioShock was initially developed using an enhanced version of the Vengeance engine, the highly modified version of Unreal Engine 2.5 technology used by previous Irrational titles Tribes: Vengeance, SWAT 4, and SWAT 4: The Stetchkov Syndicate. In an interview at E3 in May 2006, Levine announced a switch to a modified Unreal Engine 3.0.[/quote:ade395cc78]

http://www.bioshock-online.com/faq/#multiplayer
[quote:ade395cc78]No, BioShock is a single player game only. Irrational have said that they preferred to make a fantastic single player game than a mediocre one that includes a multiplayer component.[/quote:ade395cc78]

:(

http://www.megagames.com/news/show.cgi?&amp;idtype=demos&amp;database=1165&amp;section=downloads&amp;
there's a demo there