What is fallen london advent?

Fallen London Advent is a series of special events that take place in the game Fallen London during the month of December. It typically involves daily updates that include new storylines, characters, items, and challenges. Players can participate in unique quests and challenges that are only available during Fallen London Advent. The events often have a theme related to the holiday season, but can also incorporate other elements of the game's lore and mythology. Participation in these events can earn rewards such as unique items and currency. Fallen London Advent is a highly anticipated event among fans and serves as a way to bring the community together during the holiday season.