See the Trivia pages:
* Trivia/RoomiesItsWalkyJoyceAndWalky

!!Trivia that applies to the Walkyverse as a whole:

* MilestoneCelebration: Willis loves him some anniversary.
** #3/2000 (''It's Walky!''): After being OutOfFocus for ten months, we get another look at the remaining Indiana College characters.
** #5/2002 (''It's Walky!''): Joyce and Walky, who will become the OfficialCouple, spend their first night together.
** #6/2003 (limited print): A poster featuring every single character from the past six years.
** #7/2004 (''It's Walky!''): We get a brief cutaway to Danny and Joe that directly references their ''Roomies!'' days in the middle of a massive battle much more focused on SEMME.
** #8/2005 (''Joyce and Walky!''): Each paid month comes with a computer wallpaper; this month's [[InternalHomage recreates the first strip's last panel.]]
** #9/2006 (''Joyce and Walky!''): Danny and [[spoiler:Billie]] move into a house together, Danny mentions the events of the first strip.
** #10/2007
*** ''Joyce and Walky!'': The birth of Billie and Danny's daughter DJ results in a warped, stress-enduced {{flashback}} [[InternalHomage to the first strip.]]
*** Limited print: A poster featuring most of the major characters.
** #11/2008 (''Shortpacked!''): The comic homages via dialogue [[InternalHomage the first strip]], the death of two major characters, a memorable speech Walky made once, and it all ends with a ''Roomies!'' TitleDrop. There's also the signifigant event of the main ''SP!'' characters all moving in together.
** #12/2009 (''Shortpacked!''): Joyce and Walky guest appearance as they decide to have Robin authenticate their wedding.
** #13/2010 (''Dumbing of Age''): ''Dumbing of Age'''s first comic occurs, in order to conserve the anniversary cross-universe.
** #14/2011
*** ''Shortpacked!'': [[spoiler:Amber accepts Mike's wedding proposal.]]
*** ''Dumbing of Age'': We get a comic on a Saturday.
** #15/2012
*** ''Roomies!'': [=BringBackRoomies=].com is launched, rerunning Webcomic/RoomiesItsWalkyJoyceAndWalky one comic a day in "best reading order" rather than publication date, adorned with new commentary from Willis.
*** ''Shortpacked!'': [[spoiler:Amber and Mike get married]], the vast majority of Willis's characters are in attendance.
*** ''Dumbing of Age'': [[InternalHomage A direct homage to the first "Roomies!" comic, complete with subversion of its original punchline.]]
*** Limited print: Another every-character-ever poster, which simultaneously homages the massive ''CrisisOnInfiniteEarths'' poster and many events throughout the history of the 'verse.