The interest surrounding the game stems from a number of factors. One is that Blizzard, while known for producing quality games, has never developed a massively multiplayer online game. Blizzard does have experience in providing an online matchmaking system for tens of thousands of Starcraft, Diablo, and Warcraft III players simultaneously on Battle.net. But creating a fast, stable environment for an MMO game is a whole lot different, as many larger companies would attest. Another reason for the interest is that this will be the first commercially available game set in the Warcraft universe that isn't a real-time strategy game.