Despite the fact that most of us play hundreds of games during each generation's lifespan (or at least many, many dozens) there's arguably one single title that you spent playing more than the others. This thread isn't asking for your favorite game of that generation, or the one you liked to play the most. Just what you believe your most played game would have been if, like modern consoles, it had kept track.
So what was it for you for each one? And do you notice any trends in your gaming habits by your list?