Sure. It's just mimicking those traditional advent calendars, counting the days until Christmas with a surprise present or treat for every day to enjoy. Every d

Sure. It's just mimicking those traditional advent calendars, counting the days until Christmas with a surprise present or treat for every day to enjoy. Every day, one new puzzle unlocks. On top, the story that unfolds during December might refer to Santa Claus, and the Easter Bunny, or elves and reindeer. The programming challenges are open for anyone.