Ragnahog

Ragnahog is the twenty-ninth and final episode in Angry Birds Seasons. It was released on December 1, 2016. It is the sixth official episode of the Seasons 2016 package and is the seventh Christmas-themed episode (Vikings version) the first being Season's Greedings, the second being Wreck the Halls, the third being Winter Wonderham, the fourth being Arctic Eggspedition, the fifth being On Finn Ice, and the sixth being Ski or Squeal.

Similar to Season's Greedings, Wreck the Halls, Winter Wonderham, Arctic Eggspedition, On Finn Ice and Ski or Squeal it contains 25 levels, which will be opened once per day (At the time of its release), advent calendar style. Because of this format, the player can't unlock additional levels by completing them in order like in other episodes. Thus, the levels can be tackled in any order the player desires, proving that the required levels were passed.

Google Play and iOS Description
In the dead of winter, green-snouted banners unfurl in the arctic wind. In the distance, a lone slingshot rises to answer the Viking Pigs’ call for battle. It’s a new advent style episode: Ragnahog!

– New Viking-themed episode!

– Play a new level every day Dec. 1-25.

– 2 new Golden Egg Levels!

– Terence’s Nordic cousin Tony visits for the holidays!

– New quests and achievements!

Trivia

 * The title of "Ragnahog" is a reference to "Ragnarok", a futuristic apocalyptic event in Norse Mythology.
 * The selection screen for Angry Birds Seasons has been changed to a different format.
 * When the episode is released, the theme song for Winter Wonderham is changed to an instrumental version of Fly Me Home Tonight.
 * There is a bug on the level selection, when you complete a level, with 3 stars or Mighty Eagle, the next level unlocks automatically without purchasing all levels.
 * This is Tony's third appearance, The second was Ski or Sequel and the first was On Finn Ice.