UPIXO In Action: Mission in Snowdriftland (or simply Mission in Snowdriftland) was a Flash-based platforming game created by Extra Toxic, with help from Nintendo. Doubling as a game and an advent calendar advertising different Nintendo products, every day from December 1 to December 24, 2006, an extra level was added to the game. Each level is filled with enemies and 24 snowflakes. Collecting every snowflake in a level unlocked secret downloads. The game was supposed to be taken offline on January 14, but was delayed until January 16 - it is now no longer available although the site is still online (thanking the players). The game was scored by Fabian Del Priore.
The original games 2006 Nintendo levels are now gone forever. It also seems like the 2010 revival is gone as well.