An excellent introduction to the topic. It would be interesting to probe not merely the short term effects (as the research here seems to have as its focus) but also the adaptive responses the brain can and will (or could reasonably be expected to) develop over the long term depending on binge patterns.

Since we know that progressive resistance exercise builds muscle strength, it seems easy to deduce that building tolerance levels to high levels of dopamine release should reasonably be expected to result in higher capacities in a subject to release dopamine. Absent the stimulant (games) to release dopamine, a subject can reasonably be expected to crave what the stimulant provides--and the brain is well-suited to providing itself what it needs.

I am unconvinced that gaming can be described with the blanket phrase "bad for you." It is much easier to believe that it is a powerful tool that has been often abused due to our lack of understanding about what it can do for people.