There have been 13 days in December and 
GOG has 
celebrated each one.  There have been 
price drops, 
greeting cards, and 
even buttons.  However, it has all been leading up to December 14 - a date on which GOG will reveal "the big surprise."  Does anyone have any guesses on what this will be?  Maybe a new publisher, a GOG client, or a year-end sale?  We'll have to wait until tomorrow to find out.