I suggest that people who use games as de-stressers by focusing on them in a mindless, repetitive way may well be just using the game as a focus for meditation. Now, just as in the book I stated that flow isn’t the same thing as fun, I’m going to state that this isn’t really what we tend to term fun either. It arguably has significant mental benefits, but it doesn’t use the particular virtues of games. You could very well be whittling or gardening or reciting mantras under your breath instead. At most, it is an opportunity to practice mastery — you can’t very well use a game as a meditative device unless you have mastered to the degree where play is largely automatic. And by its nature as a practice, it will tend to push you away from feelings of frustration — which are a characteristic element of the experience of true fun. I’ve had people write things like “so you’re telling me that I shouldn’t play games this way?” based on the comment in the book that you ought to move on from a game when you have mastered it, in order to keep learning more. And I still believe that it is true in the general case. But I have nothing against meditation — I actually think it is a very valuable practice — and if doing it with games is what does the trick for you, then by all means, continue. Just be aware of why you are doing it, and be cognizant of the many many other ways in which you could be meditating instead, some of which involve getting some exercise.