Microsofts Xbox Store "Countdown" sale, starts on December 22 and Microsoft is calling it the "biggest sale ever" for the Xbox One. Microsoft has released a teaser video for the sale to give players an idea of what we cant expect. There will be 200+ deals offered throughout the course of the sale, which includes daily and weekly deals for Xbox One, Xbox 360 games, movies and TV shows. The Countdown sale will end on January 7, 2016. Another sale that will start on December 22 is the Steam Winter Sale.