Angry Birds Seasons

Angry Birds Seasons (formerly titled Angry Birds Halloween) is the second game in the Angry Birds series, which contains episodes based around real-world holidays. It was originally available on five platforms: iOS, Android, webOS, Symbian^3, and Windows Phone 7. It has also recently been released for PC and Mac.

Seasons was initially released as Angry Birds Halloween to in October 2010 (October 2009 in PSP Minis), and the name was changed in December to Angry Birds Seasons with the Christmas episode. Updates have continued since and are listed below.

On August 23, 2011, the Mighty Eagle was released for the game on iOS devices. Seasons is typically updated on a semi-monthly basis, each update adding a themed episode stylized by an upcoming holiday, and usually two Golden Eggs. (The exceptions: Easter Eggs has 11 Golden Eggs (10 in PC and Mac), Summer Pignic has 3, and Wreck the Halls has 3.) Angry Birds Seasons split into two packages, Seasons 2011 and Seasons 2012.

Seasons 2011 Seasons 2012
 * 1) Trick or Treat - Halloween, October 21st, 2010
 * 2) Season's Greedings - Christmas, December 1st, 2010
 * 3) Hogs and Kisses - Valentine's Day, February 7th, 2011
 * 4) Go Green, Get Lucky - St. Patrick's Day, March 10th, 2011
 * 5) Easter Eggs - Easter, April 18th, 2011
 * 6) Summer Pignic - Summer Solstice, June 21st, 2011
 * 7) Mooncake Festival - Moon Festival, September 1st, 2011

 Ham'o'ween - Halloween, October 21st, 2011 Wreck the Halls - Christmas, December 1st, 2011 Year of the Dragon - Chinese New Year, January 19th, 2012 

Trivia

 * When the player completely beats an episode (getting all 3 stars on all levels and completed all golden eggs), the item representing the holiday will have a golden star on it on the main menu.
 * The pigs also changed into the Chrome version sprites (only in the new version)