Gamers..

How about substituting in this questionair http://psychclerk.bsd.uchicago.edu/mse.pdf about substance abuse (alcohol) the word alcohol with gaming?

Are you an alcoholic?

THE CAGE SCREENING TOOL
• “Have you ever felt that you should Cut down on your drinking?”
• “Have people Annoyed you by criticizing your drinking?”
• “Have you ever felt bad or Guilty about your drinking?”
• “Have you ever had a drink first thing in the morning to steady you nerves or get rid of a hangover
(Eye-opener)?”
• Scoring: Two or more positive responses correlate with substance abuse.
Ewing JA. Detecting alcoholism: The CAGE questionnaire. JAMA 252:1905-1907 (1995)

Source: http://psychclerk.bsd.uchicago.edu/mse.pdf