Set years after the events of the first game, Merry Gear Solid 2 sets Old Snake on an adventure to retrieve Santa’s Hat from an extremist group known as the Ghosts of Christmas Past. – [Author’s description]
Merry Gear Solid 2: Ghosts of Christmas Past (Arthur Lee)
Posted by Aquin
on December 16, 2013
It also has one of the best christmas songs in any game, ever:
https://www.youtube.com/watch?v=zdx0PJ37H2c