Demos are also constructed for exhibit to fans, often in playable form for gaming conventions. Blizzard created a playable demo of Diablo III for the fans and media to try out at Blizzcon 2008, 2009, and 2010. They've taken these same demos to other gaming shows as well, including Gamescom, PAX, and even Warcraft III tournament events.[http://diablo.incgamers.com/blog/comments/play-d3-in-austin-texas-august-21-22/] Whether or not a playable demo will be at an event is often a mystery until just before the event, resulting in delighted or disappointed fans.[http://diablo.incgamers.com/blog/comments/sweden-no-d3-for-you/]