Just read an interesting article at Grantland, found here: http://www.grantland.com/story/_/id/9097228/tom-bissell-interviews-ken-levine-mind-bioshock
I love video games and in the same breath I'll tell you they're largely useless. They don't inspire, they don't assist creation, they don't do much more than kill time. But I like killing time and I like being lazy and I really like controlling pixelated hockey players on a TV screen. So video games are good by me in moderation. I don't recommend this article for its video game value though. I think it's a great piece about the craft of writing seen through a different lens. The Bioshock series has always stood out as a cool, eerie shooter in a genre littered with war simulations and alien shooters. Its stories are great, but its atmospheres are even better.
Ken Levine details this process in a number of great quotes, but here's my favorite: