Some people say gamers are addicted to their games, they let everything in life go by as the importance of the game takes over, but addiction is a very harsh word, perhaps we should use fascination, a much softer approach.
One important difference is that fascination, by its very nature, doesn't last. We lose interest in that game that was so very important to us last month. We might then actively seek out another game to be passionate about, but it isn't as if we got fascinated by any game we try. Unlike an addiction our fascination with some game can easily be cured by simply not playing for a week, because we lose that fascination rather quickly. We come back from a holiday and find that we lost all interest in a game that was highly important to us before the holidays.
Losing that fascination was easier when games were mostly played on desktop computers and consoles. Mobile games are less easy to get away from. But until our phones and tablets get a lot more powerful, mobile games aren't quite as intricate and pretty as PC and console games. People do get hooked on Angry Birds or Candy Crush Saga, but more easily if that phone or tablet is the first gaming platform they own. And many mobile games have game mechanics that prevent you from playing for hours, and if not your phone battery is making sure you don't.
Less than a third of people are really engaged in their work, people get bored with their marriage, and the safety of modern life means we are less often worried about really important things like our physical well-being. Games become very important to us because there isn't really much competition for our attention. This can be an illusion, and by neglecting real life we risk to lose stuff we took for granted.
In the majority of cases fascination with a game is not as bad as addiction, we need something in our life which we control and passes.