The design of online games has reached a new level of sophistication, appealing to millions of people. There are more than 2.3 billion active gamers in the world this year, of which almost half spend money on games. A recent report by the international games market research company Newzoo estimates that the global games market will reach $137.9bn in 2018, with digital revenues accounting for 91 percent. As the gaming phenomenon grows, the World Health Organization (WHO) has identified a new disease - gaming disorder. The WHO defines the disorder as 'a pattern of gaming behaviour with increasing priority given to gaming over other activities ... and continuation or escalation of gaming despite the occurrence of negative consequences.' So what does gaming disorder really mean and how can it be treated 'What happens when we are immersed in a video game, is that the brain starts to activate the sort of exciting reward system, neurological pathways that are associated with excitement and pleasurable activities, and of course it makes us want to do it more and more,' children and adolescent psychiatrist Dr Richard Graham told Al Jazeera. 'So game designers and perhaps social media platforms have learned how to activate those systems to keep us in game and on screen for as long as possible.' With many of his patients in the 14 to 15-year range, Graham said that many youths are facing increasing stress due to the pressure of school. One of the ways they try to escape the ordinary pressures of life is through technology - which then can become an unhealthy escape. 'Where we start to move into the territory of addiction is when what was once almost a healthy way of coping with stress starts to have a grip of its own. That person is no longer able to have control over their use and they feel compelled to keep increasing the amount of whatever is is - a substance or gaming,' Graham explained. 'The loss of control is absolutely key to an addi