Steffen P Walz, a game designer and cultural anthropologist designed a great navigation system for his website. There are four mini games, each an archetype of a game genera: Achiever, Killer, Explorer, and Socializer. When the website viewer/game player completes a small task, the content on the web page changes. There’s also a standard navigation bar.
The first librarian to implement something like this as the interface for the the YS/YA portion of their website will get the “walking paper seal of approval” and a big handshake from me. And importantly they’ll get more use of their website.
If you check out his site, Playbe’s Place, you can try the game based navigation and read his ideas about the “military entertainment complex,” pervasive computing, “suvelitainment,” and the game generation.