Microsoft is throwing a House Party on Xbox LIVE in February and perhaps they are bringing many new games to the two Xbox 360 and Windows Phone 7 including the PC classic Torchlight to a HD remake of Beyond Good and Evil and also Hard Corps Uprising.
The announcement of the House Party promotion came following the Microsoft CES keynote with intends to kick rid of it on February 16. Hard Corps Rising could be the first game but no more info schedule was handed as to if the rest will probably be released. Presumably it is going to be one or two games weekly over a month-long period you need to include some other kind of incentive to buy all of the games like previous promotions.
These would be the games as outlined by a Microsoft blog post.
Xbox Live Arcade:
Windows Phone 7: