What the research says about video game and internet gaming addiction

The scientific community has spent more than a decade building a research record on Internet Gaming Disorder, and the findings across systematic reviews, longitudinal studies, and international diagnostic frameworks point in a consistent direction.

Problematic gaming, defined by impaired control, increasing priority given to gaming over other activities, and continued play despite negative consequences, is associated with depression, anxiety, sleep disruption, academic decline, and significant impairment in daily functioning. That research record now forms part of the evidentiary foundation in product liability lawsuits filed against major video game developers.

WHO recognition and what it established

The most significant institutional development in this field came when the World Health Organization included Gaming Disorder in the International Classification of Diseases, 11th Revision. The WHO defined the condition as a pattern of gaming behavior characterized by:

• Impaired control over gaming frequency, intensity, and duration
• Increasing priority given to gaming over other interests and daily responsibilities
• Continued gaming despite negative consequences to health, relationships, or functioning
• Significant impairment in personal, family, educational, occupational, or social functioning persisting for at least 12 months in most cases

This recognition was based on a review of available scientific evidence and expert consensus, and it gave plaintiffs in active litigation a recognized medical framework to anchor causation arguments in individual cases.

What systematic reviews and longitudinal research have found

The peer-reviewed research on Internet Gaming Disorder has grown substantially over the past decade. The most significant studies include:

• 2025 PRISMA systematic review published in Heliyon: Multiple database searches turned up consistent evidence linking Internet Gaming Disorder to higher depression, anxiety, stress, and psychological distress. It's complicated to determine the order, the authors said, as psychological distress may feed into and result from compulsive gaming.
• 2023 systematic review and meta-analysis published in Acta Psychologica: The review drew on research from 2017 to 2022 and found evidence tying problematic gaming to depression, anxiety, sleep problems, reduced academic performance, lower quality of life, social impairment, and emotional difficulties. The harmful effects, the review confirmed, are concentrated among individuals with genuinely problematic gaming behaviors rather than those who play casually.
• 2023 longitudinal meta-analysis: A review of 39 longitudinal studies covering more than 37,000 participants found modifiable risk factors for Internet Gaming Disorder, among them longer daily gaming, loneliness, weak peer relationships, limited social support, and low school engagement. Because this review analyzed longitudinal rather than cross-sectional data, it provides stronger evidence about predictors than earlier research designs.
• 2020 clinical systematic review: Among those meeting proposed diagnostic criteria for Internet Gaming Disorder, researchers commonly found loss of control over gaming, withdrawal-like symptoms, growing tolerance requiring more play, and meaningful interference with school, work, and relationships. The review concluded that clinical evidence broadly supports recognizing Internet Gaming Disorder as a distinct behavioral condition.

Why do these studies matter in active litigation

Product liability lawsuits filed against Epic Games, Roblox Corporation, Activision Blizzard, Microsoft, and Electronic Arts allege that developers deliberately incorporated design features that foreseeably produce compulsive use in adolescents. Plaintiffs cite the research record described above to support two arguments: first, that Gaming Disorder is a medically recognized condition producing documented harm, and second, that the specific design mechanics defendants built into their games, including variable reward systems, loot boxes, endless progression loops, and social pressure features, function through the same psychological pathways the research identifies as driving compulsive gaming behavior.

Research has also found that individuals with Internet Gaming Disorder are more likely to exhibit higher impulsivity, lower emotional stability, and poorer self-control, and that escape motivation is one of the strongest psychological predictors of problematic gaming. Many of the affected said they used the games to escape stress, negative emotions, loneliness, and anxiety - a pattern the plaintiffs say developers exploited rather than addressed.

Defendants contest these claims and challenge whether any particular game's design was responsible for the injuries alleged. The litigation is still in the early stages, and no ruling establishing industry-wide liability has come down. Plaintiffs must still tie specific design decisions in specific games to their child's diagnosed condition, making documented medical records, treatment history, and evidence of the connection between gaming and the injury the core of any viable claim.

Atraxia Law can assist you with your video game addiction claim

If your child was diagnosed with depression, anxiety, gaming disorder, or another condition linked to compulsive gaming and required therapy, medication, or hospitalization as a result, the research record and the active litigation behind these cases may support a video game addiciton claim. Our team has spent more than 35 years helping families assess whether they have a viable case and connecting those who qualify with attorneys prepared to represent them. Reach out today for a free and confidential case evaluation.