I want to purchase NFS:Most Wanted through xbox live, however NFS:MW is not available there. When should I expect it to be available on "Games on Demand" ? Do games have a generic time duration before release ?
Release dates for Games on Demand games are not really predictable. Some games never see a GoD release, while others come out within a few months of the disc release. Barring any prerelease information from a credible source, you won't know when the release will occur until it does.