Unique Streaming Technology

ArenaNet's unique streaming technology forever eliminates the concept of patching a game. You don't have to wait a month for the next big patch to experience new content. Instead, the game constantly and intelligently streams new content to your computer in the background while you play. The world can and will change continually. This allows you to experience a much more dynamic game world than any that has existed before. http://www.guildwars.com/gameplay/synopsis/