Though the feature is being called 'global play', Diablo III's servers will be split into three regions for the Americas, Europe and Asia.
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The Americas region will include the US, Canada, Latin America, Australia, New Zealand, and Southeast Asia. The Europe region will include the European Union, Eastern Europe, Russia, Africa, and Middle Eastern countries such as Israel and the United Arab Emirates. The Asia region will include South Korea and the regions of Taiwan, Hong Kong, and Macau.
By default, players will begin in their home region. They will then have the option to switch between which region's servers they are playing on.
However, it is not a seamless process as users cannot transfer characters, items or friends lists when switching between region servers. Users will instead need to create a new character and new friends list for each region they join.
Auction houses will also be restricted by region, as users will only have access to the gold acquired on a specific server for its auction house. Access to real-money auction houses will only be available when playing on a user's home region.
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This marks an improvement over how Blizzard's Battle.net service locked region servers in games like 2010's Starcraft 2: Wings of Liberty.
A Collector's Edition of the game will be available at retail, which includes the game's soundtrack, a two-disc behind-the-scenes DVD and Blu-ray set, an art book and a 4GB USB soulstone flash drive loaded with the full games of Diablo II and its expansion Lord of Destruction.
Blizzard is also offering Diablo III free to users who sign up for the World of Warcraft annual pass, a yearly subscription to the popular MMO.
To mark the release of the long-awaited sequel, Blizzard has announced that it will hold a series of global events to celebrate its launch.
See the Wizard trailer for Diablo III below: