In South Korea, there is no software package or CD key requirement to activate the account. However, to play the game, players must purchase time credits online. There are two kinds of time credits available: one where the player is billed based on the actual number of minutes that will be available, and one where the player can play the game for a number of days. In the former, time can be purchased in multiples of 5 hours or 30 hours, and in the latter, time can be purchased in multiples of 7 days, 1 month, or 3 months. As software packages are not required, expansion pack contents are available to all players on launch day.
^ "The Activision/Blizzard Merger: Five Key Points". Industry News. gamasutra.com. December 3, 2007. Archived from the original on December 21, 2008. Retrieved February 24, 2009. One of the intriguing things about the old Vivendi structure was that, even when Martin Tremblay joined to run Vivendi's publishing, it was specified: "World Of Warcraft creator Blizzard Entertainment has been designated a stand-alone division reporting to VU Games' CEO, and is not part of Tremblay's product development mandate.
The soundtrack for World of Warcraft was composed and arranged by Jason Hayes, Tracy W. Bush, Derek Duke, and Glenn Stafford and conducted by Eímear Noone. It was released on November 23, 2004, together with the collector's edition of the game. It is sold separately on one CD in the MP3 format. On January 12, 2011, Alfred Publishing produced an officially licensed sheet music series for vocalists, pianists, strings, and other instruments, World of Warcraft Sheet Music Anthology in solo and accompaniment formats with CD. These works include four pages of collectible artwork and vary by number of songs included. In 2018, a remix of the song from the game, "Hymn of the Firstborn Son", was nominated for "Best Game Music Cover/Remix" at the 16th Annual Game Audio Network Guild Awards.