Back in elementary school, I had a friend whose parents would buy him an advent calendar every year. And every year, invariably, all of the door would be pried open and all of the chocolates eaten by, oh, December 3rd or so. But now we’re all grownups here, right? We can finally have a proper advent calendar without cheating chronology.Gameloft thinks so. The publisher is offering up a Twitter advent calendar, counting down the days until Christmas by offering up a “surprise gift” every day between now and the holiday.The company will be offering up something each day on its Twitter feed, including free games for the iPhone, Android, iPad, and Facebook; previews of upcoming games; and “crazy” discounts on Gameloft products. All deals can be found over on @gameloft.