Why Is There a 'Gaming Disorder' But No 'Smartphone Disorder?'

The international health community has decided that if you play video games like Fortnite or World of Warcraft a lot, you might suffer from a mental-health issue: Gaming Disorder. It's a behavioral condition that the World Health Organization has added to the proposed 11th revision of its International Statistical Classification of Diseases and Related Health Problems, or ICD-11, the first update to the classification since 1992. If you play a lot of chess or Settlers of Catan on a card table in the den, don't worry, you're fine--according to WHO, gaming disorder is a digital affliction. If you play obsessively online with other people, to the detriment of other activities, that's one possible sign of trouble. But playing offline and alone--Candy Crush, say, or even Tetris--is also a potential red flag.