Microsoft is throwing a House Party on Xbox LIVE in February plus they are bringing many new games to both Xbox 360 and Windows Phone 7 between the PC classic Torchlight to a HD remake of Beyond Good and Evil together with Hard Corps Uprising.
The announcement of the House Party promotion came following your Microsoft CES keynote with intentions to kick it well on February 16. Hard Corps Rising would be the first game but no schedule was presented as to in the event the rest will likely be released. Presumably it is going to be online games free to play no download one or two games every week over a month-long period you need to include some other form of incentive to buy all of the games like previous promotions.
These are definitely the games in line with a Microsoft blog post.
Xbox Live Arcade:
Windows Phone 7: