Is video game addiction a mental illness

All addictions are considered a psychological problem.

You can determine if playing video games has become an addiction when it begins to get in the way of your other necessary activities, e.g. you get to school/work late because you cannot stop playing, you frequently miss dates, you stop taking care of your personal hygiene, you stop eating or eat a lot less (going from eating 3 meals a day to just 1 meal because you spend so much time playing).

If you consider yourself addicted, seeking advice from a professional is reccommended. I've been there myself !