Around 250 million people have played the wildly popular online game Fortnite in the year-and-half since its debut. Players battle with guns and other weapons on a fantasy island or work together in “creative” mode. One in four parents are worried about the amount of time kids spend on the game. Dr. Sue Varma, a board certified psychiatrist and assistant professor at NYU Langone Medical Center, joins "CBS This Morning" to discuss the impact the game could have on youth.
