Penny Arcade today announced that exhibit space is now sold out for its upcoming Penny Arcade Expo (PAX) event slated to invade Washington State from August 25th-27th. On the exhibit floor PAX '06 attendees can expect to get hands on with yet-to-be-released games and products from the likes of exhibitors Microsoft, Nintendo, Nvidia, ArenaNet, America's Army, Turbine, NCSoft, Ubisoft, Mythic, Sabertooth Games, Foundation 9, Rockstar, Flying Lab, Creative Labs, The Behemoth, Garage Games and Red Octane among others. In addition to pre-release games on its show floor, PAX offers attendees a host of game-related conference sessions, parties, concerts and contests, including the grand-daddy of game challenges, the Omegathon. Alex St. John will keynote PAX06 with a presenation called "The Prehistory of Xbox," which will address the legends and anecdotal stories of the evolution to Microsoft's Xbox as experienced by the man behind the "Manhattan Project." A former Microsoft employee, whose exploits have been chronicled in books such as "Renegades of the Empire" by Michael Drummond, "Opening the Xbox" by Dean Takahashi and "Masters of Doom" by David Kushner, today St. John runs WildTangent, an online game publishing company. You can learn more about this event by visiting www.pennyarcadeexpo.com .