Charles Cumming's "The 21 Steps" is about a man in London who thinks he's being followed, and readers follow the story as it unfolds in Google Maps. This could be a perfect new medium for choose-your-own-adventure tales.
Editorial note: Whoa! You've found a super-old post here on BuzzFeed, from an earlier era of the site. It doesn't really represent where we are anymore, and may in fact be totally broken, but we're leaving it up as a part of our early history.