Bioshock is easily one of the best games I have ever played. This is the whole package. It's got a great story, an awesome atmosphere, and the gameplay is unique enough that it doesn't come across as just another FPS.
This is a must have game for anyone, bioshock has a high replay value. Everything works, bioshock has a good story with a twist at the end. I own this game on xbox 360, I liked it so much, that I had to get a PS3 copy. Top game of the year.