Microsoft is throwing a House Party on Xbox LIVE in February and they're bringing quite a few new games to their Xbox 360 and Windows Phone 7 starting from the PC classic Torchlight in an HD remake of Beyond Good and Evil in addition to Hard Corps Uprising.
The announcement of the House Party promotion came following the Microsoft CES keynote with offers to kick it well on February 16. Hard Corps Rising is definitely the first game but no schedule was presented with as to once the rest are going more info to be released. Presumably it will probably be one or two games each week over a month-long period you need to include some other kind of incentive to acquire all of the games like previous promotions.
These would be the games as outlined by a Microsoft pr release.
Xbox Live Arcade:
Windows Phone 7: