Ah Bioshock's a funny one. I played it for the first time around this time last year. The noises those machines which you buy plasmids from make still ring in my head
The setting and backstory behind the game is easily what makes it so great. The Big Daddy is so iconic and the game has such amazing art and design; definately one of my favourite games stylistically.
I think the story itself is fairly good, but the ending was so disappointingly bad (I'd like to know if anyone liked it?!).
The graphics aren't that great, but the vivid colours I think work well and help to emphasise the feeling of being underwater.
The combat gameplay itself is pretty bad; it almost put me off playing entirely but I stuck with it and quickly became used to it. The plasmids are pretty fun, but nothing spectacularly fun in my opinion.
Bioshock was fun and I'd definately recommend it, but it wasn't one of the best games I've ever played.