SCP-4666 only becomes active for twelve nights every year, from the night of December 21-22 to the night of January 1-2, manifesting and seemingly teleporting to any location above 40°N latitude, where it will designate a household and family, always with one or more small children under the age of eight. You and the other players are one of the children that must survive!
Look for clues to win the game or try to survive The Yule Man!