Angry Birds Seasons

Angry Birds Seasons (formerly Angry Birds Halloween) is the second game in the Angry Birds series, which contains episodes based around virtual-world holidays. It is available on all major platforms.

Seasons was initially released as Angry Birds Halloween on October 20, 2010. The name was changed in December to Angry Birds Seasons with the Christmas episode, Season's Greedings. 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 is split into three packages, Seasons 2011, Seasons 2012, and Seasons 2013.

Seasons 2011
Below is a list of episodes released in the 2011 package:
 * 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) Moon Festival: Mid-Autumn Festival, September 1st, 2011 (originally titled Mooncake Festival)

Seasons 2012
Below is a list of episodes released in the 2012 package:  Ham'o'ween: Halloween, October 21st, 2011 (Orange Bird introduced in this episode) Wreck the Halls: Christmas, December 1st, 2011 Year of the Dragon: Chinese New Year, January 19th, 2012 (Mighty Dragon in this episode) Cherry Blossom: Japanese Cherry Blossom Festival, March 7th, 2012 Piglantis: Summer Solstice, June 14th, 2012 Back to School: School Returns, August 16th, 2012 (Pink Bird introduced in this episode) 

Seasons 2013
Below is a list of episodes released in the 2013 package:  Haunted Hogs: Halloween, October 2012 

Special Items
Like the original game, all episodes have an item representing them which are flying around on the main menu screen once that episode is complete.
 * Trick or Treat: Jack-o'-lantern
 * Season's Greedings: Present
 * Hogs and Kisses: Pig in a "Cupid Suit"
 * Go Green, Get Lucky: Four-leaf Clover
 * Easter Eggs: Easter Egg
 * Summer Pignic: Sunflower
 * Moon Festival: Mooncake
 * Ham'o'ween: Skull
 * Wreck the Halls: Candy Cane
 * Year of the Dragon: Firework
 * Cherry Blossom: Cherry Blossom
 * Piglantis: Red Starfish
 * Back to School: Textbook

3-Star Special Items
When the player earns 3 stars on all levels of an episode, the item representing the season will have a golden star on it on the main menu. Some items have significant changes.
 * Trick or Treat: Without 3 stars on all levels, the jack-o'-lantern will have a face. With 3 stars, the face will be replaced by a star.
 * Hogs and Kisses: Without 3 stars on all levels, the Pig in a "Cupid Suit" having the heart as the point of his arrow. With 3 stars, the heart is replaced by a star.
 * Ham'o'ween: With 3 stars on all the levels, the eyes of the skull will light up, and the star will appear on the skull's forehead.

Cutscenes
The Trick or Treat episode is the only episode which had a cutscene because it was formerly Angry Birds Halloween, but cutscenes were removed in a recent update for consistency.