From time to time I get th urge to run a System Shock 1 adventure in Traveller. A space station ruled by a mad AI and overrun by crazed robots and her cyborg and mutant experiments... Simply delicious!Actually I find System Shock 2 more inspiring, and I keep thinking that Savage Worlds with its cinematic action and short preptime would be the best system.

I haven't played Bioshock yet; I got scared when I heard about its DRM (is it true that you can only install it 5 times and then it stops working?). If the DRM issue would be solved I'd definitely buy it - I know the guys who've made it from their previous work (the System Shock series) and I like their work.
Cities On the Hill
Typically if you have a tyrant, he's there because he's the biggest, strongest guy with the most power, and he's in charge. Rarely is it a personality cult.
Rapture is instead made by a guy (and then later a woman) with a Vision. He didn't have power until after the fact, but the entire Place is built to venerate his Ideology. Rarely do you see places that are shaped by the leader's opinions, rather than just his Goals (War/Power/Control). Rapture is intriguing because this Philosophy was built right intot he foundation - and then it fell down under the weight of the idea. So it's a contradiction and a failure, but even BEFORE then, it was built purely on a philosophy.
Exotic Environment
The exotic location of being Underwater is neat. It is intriguing. It also allows for exceeding Isolation and Control. It's Unique in the part of the World.
Rapture isn't just a "city underwater". The fact it's underwater is a constantly reinforced thing. Walking through hallways that are completely glassed, so you see the sea around you. Areas are continually leaky. Rooms occasionally burst and you have to escape the flood (or walk along the bottom of the ocean).
So it implies that if you create such a unique place that is linked to its locale and environment, constantly reinforce it. Tie that location so much to it. So it's not just "A town sitting in this funny place" but "many aspects of this funny place is incorporated into it" and "effects behavior" and a lot of other effects related to the city itself.
Final point
Bioshock 1 & 2 constantly reinforce their themes. The plot(s) are circling all the things it's created, rather than plots that barely touch them. So a site-based adventure, have the hooks and the plots reinforcing the characteristics of the city itself.
I did not! That's really cool!Rechan, you know that Sagiro was a designer on System Shock, System Shock 2 and Bioshock, right? My friend Tim (whose EN World username I'm completing spacing on) worked on the first two as well.
I'll let them know about this thread in case they wants to swing by.

(Dungeons & Dragons)
Rulebook featuring "high magic" options, including a host of new spells.