It was accompanied by a Blood Hunt which started on the 27th.
The Event reuses the assets and the Theme Music from the previous Winter Solstice. It adds a new Winter-themed Menu Screen, new Props, such as snow piles, lanterns, snowmen and blinking lights, and changes the Fog VFX and lighting.
The Hooks, Barrels and Lockers also receive a new look.
Re-enabled the Winter Gifts, that are special variants of the Mystery Box and will replace them for the duration of the Event.
The new original Killers (meaning non-licensed), released since the Winter Solstice 2017Event, received a new Head customisation, Frosty Eyes, blue eyes akin to the All Hallows' Eyes for the original three Killers.
All original survivors (non-licensed and up to that current time) featured an "Ugly Sweater" Torso Cosmetic, available in the In-Game Store for 250 Auric Cells or 4500 Iridescent Shards.