s childhood nostalgia lies in the old kids’ websites we used to play, and now we can only look back at them in photos and gameplay walkthroughs online ...

In 2007, 13-year-old Paris Bennett dialed 911 in panic. Minutes later, police uncovered a scene of horror—his 4-year-old sister Ella was dead, and the truth pointed back to him.

That amounts to nearly 15% of his entire life — including sleeping hours — on the video game platform Steam over the course of a decade and a half.