A really wet adventure
The story connected with an underwater city called Rapture. It was built many years ago and became a ghost town. The game starts with a plane crash somewhere in the sea, near the city entrance. You are an uncalled visitor and you are not welcome.
Gameplay:
Your main mission is to survive and observe Rapture. The city is very good detailed and it is very atmospheric, it has it's boo stuff. You have a solid arsenal of weapons and other things to help you stay alive. Also you can interact with almost everything you see, even take useless garbage. Enemies are strong and varied. You must use personal tricks and ways to defeat them.
Sound and voice acting were nicely worked and minded. The story just won't leave you for a moment, you will flew in a game.
Good:
An unforgettable underwater adventure. Amazing sound and voice acting. Very decent graphics, physics and almost perfect everything.
Bad:
Sometimes get's boring for no reason.
I can tell a lot about Bioshock, but seriosly, just try it, it's awesome.