Developer Rovio announced over Twitter that a new level will be unlocked each day throughout December.



"Our gift to you: A new Angry Birds Seasons winter episode with a new level opening each day this month," the studio wrote.

The 'Winter Wonderham' update features 25 levels set against snowy backdrops with a Christmas theme. There are also three secret levels and other bonuses to unlock.

Rovio rolled out the update just days after releasing the 'Hoth But Cool' expansion for the movie-themed Angry Birds Star Wars.

Angry Birds Seasons is available now for mobile devices and PCs.