Bioshock is Amazing! The first time you play it you will be blown away!!
Cons: There are only two cons I can think of. This is not significant, but the game could have been longer. The last con I have is the AI. The AI was good, but it could have been sharper. As I have said, those cons are really not significant at all and won't take you away from liking the game to the highest possible extent.
Pros: There are many pros for anyone to rent this game and even buy it for their collection. One pro to Bioshock is the story. The story is like the classic story that does not give all the information at the beginning but fills you in on the purpose and things in the story at the right time. The story not only keeps you in depth but is surprisingly better than you would think it would be for a science fiction shooter. The setting is amazing and the graphics are amazing as well. It gives you a vivid sense of being there not only because you play in first-person, but also because if the environment of Rapture. You will notice all sorts of detail and the frame rate is consistent from my experience. The combat has also integrated a few details interactive with the environment. The little details are a reason why this game is a success. The game play is comprehensive and responsive with the story and your actions. There is also pretty good replay value to it in my opinion. The difficulty can range from easy to fair to hard in some parts if the story. It is well balanced and adds weapons, enemies, harder bosses, and objectives as you progress. It won't stay too easy for long.
In my opinion, backed by my previous statements, Bioshock is a great game that can be enjoyed by all interested or familiar with the genre.