UPDATE 12/2/10: Gameloft clarified today that their Advent Calendar is NOT a free game every day. It may also include links to promotional videos and other things, which makes me wonder if the Gameloft people understand this whole “gift” idea.
Gameloft is counting down the days until Christmas with a free app each day, which you can follow over on their Twitter page. Today’s free game is Driver, which regularly sells for $5. A different app will be free for 24 hours each day for the next 24 days.