We thought you might be interested in seeing some of the "behind the scenes" work that goes on in Team Fortress 2. The process usually starts with a team discussion: This helps us determine the goals of the map we're going to build. In this case, we wanted a game mode that had an intense, centralized experience with quick player turnaround. We liked some of the facets of Arena mode, but it was clear that many players don't like to wait for the next round to play.