I think its all too common to watch Nextflix & HBO for 20 hours in a week, but video games are taboo, despite being more social and cognitively enhancing.
If you're the kind of person who can't ignore that voice you'll end up spending a lot more time gaming than you intended, particularly if your game of choice has some sort of level treadmill.
With video games, take weeks off and you'll have forgotten the story (if any/relevant) and how to play effectively. At least that's my experience with single-player games—if I take too much time off I just have to start over, because I'll be too bad at it to handle the later stages I'm in on my last save, won't remember enough of the story, and will have lost my connection to the characters.