This is the Club Penguin timeline I've recorded so far!
The Following are thanks to Wikipedia:
Parties & Rockhopper Arrivals
Throughout Club Penguin History, there have been numerous parties and Rockhopper Arrivals, each introducing numerous free items. Here is a list of them (this list is now outdated):
2005 October 24, 2005 - Halloween Party/Beta Tester Party (Beta Tester Party Hat) December 22, 2005 to December 25, 2005 - Christmas Party/New Year’s Party (Santa Hat, Christmas Scarf, Beta Tester Party Hat)
2006 January 2006- Winter Luau (Red Hawaiian Lei) February 2006 - Valentine’s Day Celebration (Red Sunglasses, Bowtie) March 2006 - Pizza Party (Pizza Apron) March 2006 - St. Patrick’s Day Party (St. Patrick’s Day Hat) April 2006 - April Fool’s Day Party (Red Propeller Cap) April 2006 - Easter Egg Scavenger Hunt (Pink Bunny Ears) May 2006 - Mine Party (Mining Cap) June 2006 - Summer Party/Beach Opening (Blue Hawaiian Lei, Water Wings, Inflatable Duck, and Whistle) July 6, 2006 to July 14, 2006 - Western Party (Bandanna)
* August 4, 2006 to August 19/20, 2006 (extended by 6/7 days) - Sports Party (Red/Blue Face Paint, Skates)
September 22, 2006 - Lighthouse Opening (Red Sailor’s Cap, Lighthouse Shirt (from The Penguin Times) October 13, 2006 to October 20, 2006 - Rockhopper Arrival #1 (Eye Patch) October 24, 2006 - 1 Year Anniversary Party (Anniversary Party Hat) October 27, 2006 - Halloween Party (Wizard’s Hat) November 2006 - Lime Green Color Party (Members only, Lime Green Color, Green Cape) December 8, 2006 to December 21, 2006 - Rockhopper Arrival #2 (Pirate Bandanna, Red Puffle) December 22, 2006 to January 2, 2007 - Christmas & New Year’s Party (Santa Hat, Santa Beard)
January 19, 2007 to January 22, 2007 - Winter Fiesta (Maracas) February 9, 2007 - Rockhopper Arrival #3 (Pirate Belt) February 9, 2007 to February 19, 2007 - Festival of Snow (Snowflake T-Shirt, Ice Crown) Prior to March 9, 2007 - Rockhopper Arrival #4 - Rockhopper returns Bambadee to the shores of Club Penguin but amazingly never gets noticed by other penguins. March 9, 2007 to March 16, 2007 - Rockhopper Arrival #5 (Pirate Shoes, Sea Monster Background) March 16, 2007 to March 20, 2007 - St. Patrick’s Day (St. Patrick’s Day Hat) March 30, 2007 to April 2, 2007 - April Fool’s Day Party (Blue Propeller Cap & Novelty Glasses) April 6, 2007 to April 9, 2007 - Easter Egg Scavenger Hunt (Blue Bunny Ears) April 27, 2007 - Rockhopper Arrival #6 - (Puffle/Pirate Bandanna) April 27, 2007 to May 2, 2007 - Pirate Party (Sailor Hats (found by following the treasure route in the Ship Hold)) May 18 to May 24, 2007 - Party for Forest (players had to follow a map to find it) May 25 to May 29 - New Cove Party ( Members only, Whistle, Lifeguard Life ring) June 8 to June 18 - Summer Party ( Blue Hawaiian Lei, Green Inflatable Duck, Ice Cream Apron, Green Sunglasses, Flower Headress)
June 22 to ? Rockhopper Arrival #7 (Red bandanna) - July 13 to 18, 2007 Water Party ( Umbrella Hat )(blue water wings)
Puffle History 2005 October 24 - Club Penguin Opens, Puffles seen around but not officially introduced. November - Puffles officially introduced to the game. Colours originally blue, pink, green and black. November/December - Creature Naming Contest takes place. The winning name is “Puffle”, and the winner of the contest receives 5000 Coins and 3 days of free membership. December - The term “Puffle” comes into use and is used for the first time. December - All of the bugs taken out of Puffle Round-Up and it’s officially introduced to the game.
2006 March 13, 2006 - The Pet Shop opens, allowing you to buy a Puffle. Members can buy all 4 breeds, and can purchase up to 8 puffles, while Non-Members can buy one Blue Puffle. March - Although a feature from the start, the puffle’s Special Play ability is made well-known in an issue of the Club Penguin Times. June - Purple Puffles started to mysteriously appear on Puffle Round-Up. During the 1st secret mission Aunt Arctic’s Lost Puffles, players had to find her 2 lost puffles, one green and one purple, officially introducing Purple Puffles to the game. August - The Purple Puffle becomes available for purchase in the Pet Shop. September - The ability to Walk Puffle is established. October - Rockhopper talks about his pet and friend, Yarr in his journal, which is a red puffle, prior to introducing red puffles to Club Penguin. November - The ability to Bathe Puffle is established. November - Second secret mission, called “Gs Secret Mission”, reveals the origin of Puffle O’s in introducing the O Berry, which causes a Black Puffle to enact its Special Play. Late 2006 - Penguins can’t see other penguin’s puffle’s names due to the fact that penguins were giving their puffles vulgar (bad) names. December - Captain Rockhopper introduces the red Puffles to Club Penguin, although they are not able to be herded up in Puffle Round-Up like the other 5 breeds. Also, Members can now buy up to 12 puffles, and Non-Members can now buy up to two, including the Red Puffle.
2007 March 23, 2007 - Puffle play extended. May - Red puffles are able to surf with you in the new surfing game Cachin’ Waves.
Secret Missions and Book Room Library Additions
2005 None. Secret Missions have not been created yet and the Book Room hasn’t yet turned into a library.
2006 June - Aunt Arctic’s Lost Puffles able to be played by secret agents. November - G’s Secret Mission able to be played by secret agents. No Book Room library additions yet.
2007 March 9, 2007 - Rockhopper’s papers get turned into a book, that becomes the first addition to the library in the book room called Rockhopper and the Stowaway. After reading this book, whilst clicking on the friendship bracelet, one is able to receive one of the friendship bracelets mentioned in his story (Friendship Bracelet). March 3 - Frankie’s First Show, The Spice of Life, and Truth or Dare added to the library. March 26 - Case of the Missing Coins mission released. April 12 - Story Writing Contest closed. April 26 - Winners of Story Writing Contest announced. April 27 - New books to be added to Book Room - Penguin Tales (Spring ‘07): Pizza Parlour Panic (Orantango), Comoica’s Jetpack Adventure (Comoica), The Legend of the Gold Puffle (Icmer). August 7 - Avalanche Rescue mission released.
2005 Club Penguin Opens
2006 December - A wider selection of igloo music is introduced. December 2006 - A Christmas party happens during the Jolliest time of the year
2007 Sometime in 2007 - Players are eligible to become tour guides April 13, 2007 - Stage added to lighthouse. April 27, 2007 - Ship Hold opened on the Migrator May 30, 2007 - Cove open to public. Contains binoculars which work similarly to the telescope in the Beacon Sometime in 2007 -The game catching waves gets 2 more levels Sometime in 2007 - Water party begins and umbrealla hat,A free item gets relased Sometime In June 2007 - A new item adds to the water party as it extends till next monday.Leaving a free items of blue water wings and umbrella hats. Sometime in 2007 - A new igloo contest is relased with the fishbowl ilgoo because the igloo contest was my life in a fish bowl! August 1, 2007 - Disney buys Club Penguin for a lot of money! October 26th - Golden Puffle spotted at Forest and Mountain at every half hour (alternating)