As well as Arcade titles, demos and TV and movie downloads, Microsoft announced last week that it will begin offering original Xbox games via Live, including hit titles Halo, Fable and Crimson Skies.
"We have a very strong, very powerful computer network that provides the backbone for our service," continued Bach.
"Perhaps the most important thing we have is over 8 million passionate members who create and define what Xbox Live is. It's a tough thing to create, and we're going to continue to nurture it."
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