In the past, BusinessWeek might have considered licensing its brand to a board game. Instead, the McGraw-Hill (NYSE: MHP) pub hopes to bring a little more fun to its website by introducing a new section for its Innovation and Design channel called BusinessWeek Arcade—timed, of course, to promote the channel’s special report on gaming trends.  The section starts with 20 games from independent publishers. Titles include Audiosurf,  which combines racing and users’ MP3 libraries, the Clausewitz-inspired military strategy challenge Kriegspiel, and Tumiki Fighters, which lets users blow up their adversaries’ planes and then appropriate the 3D detritus for their own flying fighter.