https://www.theregister.co.uk/2017/11/27/pokemon_go_caused_car_accidents_and_deaths/

Pokémon GO killed at least two people and spiked rates of car accidents and injuries, according to a study of the game's impact on just one United States city.

“Death by Pokémon GO” (PDF), by a pair of researchers from Purdue University's Krannert School of Management, says the game caused “a disproportionate increase in vehicular crashes and associated vehicular damage, personal injuries, and fatalities in the vicinity of locations, called PokéStops, where users can play the game while driving.”