Surprisingly good!
I thought this game would have more of a gameplay driven game but to my liking I found it was not as I started to play the game I quickly became engrossed in a magnificent storyline. The story which I won't go into is simply one of the best you can experience in a video game and has major twists and turns that I didn't see coming at all.
The overall look of the game is brilliant with amazing detail in both the characters and the city of Rapture. The water looks especially great and its easy to see why this game has won so many artistic awards.
The gameplay is very easy to adapt to as it isn't too dissimilar from most first person shooters. The ability to modify your character's genetic code to enable you to have new abilities and 'powers' is fantastic and brings a new and fresh element to FPS as it is more commonly seen in RPGs.
The weapons in the game are quite good especially the shotgun and flame-thrower but for the most part I used my plasmids as it was easier and more fun.
Overall I would say Bioshock is a brilliant game that will be enjoyed by FPS fans and RPG fans that prefer a bit more action and is a must buy.