Considering it is the Microsoft flagship title, this one was only a matter of time, but Major Nelson this week announced the arrival of Halo 3 (and also the original Saints Row) to Xbox Marketplace Games on Demand service on April 20th.
So, for the seven worldwide players who don�t own a copy, now is the perfect opportunity to pick up this classic and finally see what all the fuss is about. Also, April 13th sees the release of Japanese classic Devil May Cry 4 through the same service.