From publisher blurb: Walking’ Snowmen, hairy snow monsters, magical snow, magical coal, spells that cause hail to rain upon your enemies - all of that and more can be found when your character ventures into the world of cold wind, snow, and ice. If you think your character is ready for the World of Winter, then PROVE IT! Come inside the icy lands and discover all the mysteries presented here, in ‘Twas One Night In The Dungeon. Included in this book are 4 new cold-region themed monsters, 1 new Game Master Character, 4 new cold-region themed magical items, 2 new rituals, information on the Mid-Winter Celebration, and 1 new spell group. This adventure can be played with as little as a Game Master and one player, or with a Game Master and several Players.