Mission in Snowdriftland

El Pix, an evil penguin, has stolen game files from the Human World, and made off with them to his lair in Snowdriftland. UPIXO (United Pixelheroes Organisation) has no clue what to do, seeing as the region is far too cold for anybody to survive. However, the UPIXO boss's assistant, Professor Schwabbel, spots Chubby Snow, a living snowman, who is complaining at the front desk because all his video game roles have been bad so far, and asks him to get back the game files. Every day in December 2006, a new level in Chubby's adventure becomes accessible, leading up to the final showdown with El Pix on December 24.

Mission in Snowdriftland was a flash-based platforming game developed by Extra Toxic, notable for being hosted on Nintendo's website. The game acted as an advent calendar, with a new level unlocking every day, starting on December 1 and ending on December 24. The game was originally thought to be lost, but multiple archives have been found and created, and a remaster was released in 2021 on Steam.