The Most Spectacular Photos of 2017

In Seoul, e-stadiums and gaming parlors charge about a dollar an hour, and some venues are open around the clock. Soon after South Korea made super-high-speed Internet cheap and widely available, it became clear that some people were ruining their lives through obsessive game playing. The government now pays for treatment.

This photo was originally published in “How Science Is Unlocking the Secrets of Addiction,” in September 2017.