A teenage girl becomes immersed in an online role-playing game.

"Today, Casey is taking the World’s Fair Challenge. For an internet wonk like her, that’s a big deal, and one she hopes might loop her into a wider internet role-playing world . . . Shoulders squared, Casey announces her intention, saying 'I want to go to the World’s Fair' three times (big Bloody Mary vibes), pricking her finger, showing the blood to her audience (whoever they may be), and striking up an extended video of strobing lights and pulsating sound to watch. That, she tells us, is the challenge, but she’ll update us if she 'starts to notice any changes.'" — Kate Erbland