A couple of weeks ago, I had the opportunity to spend a few days at the World Board Gaming championships held in Lancaster, PA. Until this trip, my experience with game conventions was mostly limited to Origins.
The first thing to know is that WBC is heavily focused on tournament play.
Each year they choose 100 or so games (aka The Century Group) that are the ones for which players will compete. The Century Group is chosen via votes by the membership of the Board Game Players Association. The details of the selection approach can be found here.