enjoyable

Activities such as going out with friends or eating in restaurants, which should be enjoyable, turned into stressful, potentially life-threatening experiences.

“I just found it very enjoyable to zone out and have the right kind of music on and just sort of keep going,” Mark said.

“You have to believe that Nikki is a person you would want to die with, that would be the most enjoyable, pleasurable person to spend the rest of your time with,” Rosenstock added.

"The best part of playing a team sport is winning as a team, and if your focus drifts away from that it's not as enjoyable and you don't perform as well," he said.

Hundreds of people got in touch with the BBC after reading his comments: many said parents needed to take more responsibility, or highlighted how safe and enjoyable Roblox was for their children.