Bioshock was actually very highly rated and applauded and in my opinion it is not anything that special. It's a fairly generic tedious shooter.
This. The gameplay was a bit clunky and lackluster. I wouldn't call it generic though, but it was the "atmosphere" was not as great as critics praised. Bioshock was a 7.5/8 for me. I was stunned to learn about all the praise it received.