Here are some symptoms of game addiction - the more of these symptoms you can identify, the greater the need to get professional help:
Most non-school hours are spent on the computer or playing video games
Falling asleep in school
Falling behind with assignments
Worsening grades
Lying about computer or video game use
Choosing to use the computer or play video games, rather than see friends
Dropping out of other social groups (clubs or sports)
Being irritable when not playing a video game or being on the computer
There also are physical symptoms that may point to addiction:
Carpal tunnel syndrome
Sleep disturbances
Backaches or neck aches
Headaches
Dry eyes
Failure to eat regularly or neglecting personal hygiene