Halloween, Wintersday (Christmas), the Dragon Festival, Chinese New Year, St Patrick's Day, Thanksgiving and Tasty Treat Weekend (Easter) all got the ANet treatment in Guild Wars 1. Halloween and Wintersday were particularly big events which affected every major city with decorations, events, games and countless holiday-themed quests to do. Almost all of the events also affected the world at large through special holiday drops such as candy canes and snowman summoners at Christm... sorry, Wintersday.
First on the agenda with ANet's latest baby is Halloween 2012 and historically, as good as Wintersday is, I think Halloween is most peoples' favourite Guild Wars festival. From the ghoulishly brilliant Halloween masks, to the Mad King's abysmal jokes (lord help you if you don't laugh) it's a great chance to take a weekend break away from the grind to partake in some light-hearted pagan ritual-ing.
ArenaNet have promised us a whole heap of freakily-fun stuff to keep us entertained for the whole week, including new jumping puzzles, quests and events (you can sort of see a fiendishly difficult jumping puzzle in the above image). I'm hoping we see the triumphant return of the Mad King (complete with terrible jokes), some tasty treats to munch on while adventuring, and a funky new outfit in which to prance about and be mischievous. I'm sure it won't disappoint.
22nd - 30th October. It's going to be wicked.