fire - link
i do a Games Design course at college and one of the things we had to do ages ago was have a mass debate (in b4 masturbate ._.) to discuss the effects of Game Addiction and whether it really exists. we concluded it doesn't, as there is nothing physically hooking you to keep going back to it (unlike nicotine, etc) it is a want, not a need, therefore not addicted, with the exception of some extreme cases, but each of those people (we did research into some people who claimed to have had Game Addiction and had psycological therepy to clear it) had some sort of problem anyway beforehand and were just using the game as a method of escapism (which is what all gamers do really. some of us might argue that we play games for a challenge, but in my opinion it is in its basist form, just a want to escape from the real world temporarily).
in short, its Escapism-Taken-Too-Far and lack of self control, not addiction.
I would disagree. Being addicted is defined as someone who obsessively devotes themselves to something habitually. There doesn't have to be a literal drug taken.
If some person has lack of self control, and can't put the game controller down, that person is addicted.