Microsoft is throwing a House Party on Xbox LIVE in February and they are generally bringing numerous new games to the two Xbox 360 and Windows Phone 7 which range from 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 promises to kick rid of it on February 16. Hard Corps Rising is definitely the first game but no schedule was handed as to once the rest will likely be released. Presumably it will likely be one or two games each week over a month-long period and include some other almost incentive to buy all of the games like previous promotions.
These will be the games in accordance with a Microsoft website article.
Xbox Live Arcade: here
Windows Phone 7: