So by now a lot of you have gotten to experience the random "effects" of our Halloween mode, but if you wish to manually trigger each effect (maybe you've missed one or two so far), add the following text after any URL (the main /post page is going to be best for most of these). Example: http://e621.net/post/index?effect=scarypictures
?effect=scarypictures - Makes a random "scary" image briefly flash on your screen.
?effect=corruptmypage - Randomly converts standard text to zalgo text (if your browser doesn't support this you'll just see squares) and breaks images
?effect=thumbchanger - Thumbnails are changed to http://e621.net/post/show/171514
?effect=addstatic - Adds static to the site's background
?effect=addblood - Blood drips down from the top of the site
?effect=rotateheader - The navigation at the top of the site tilts
?effect=fadeoutbody - The page you're on begins to "flicker"
And that's it! The only other effect we have that you can't trigger manually (or maybe I'm just not aware how at the moment) is the random dialog box message you'll see that says something along the lines of "I don't want to be alone anymore".
Big thanks to Aurali and TonyTheFox for making our Halloween changes a hit this year. :)
Enjoy!
Updated by GreyMaria