This is your entire lifetime of playing pinball since the first time you pushed the start button. This to me is a two part question depending on if you look at it as total time spent playing or number of games.
1. What game have you spent the most time playing? This could be a long ball time game or just your all time favorite that you can't get enough of.
2. What game have you played the most total number of games on? In other words number of completed games. This might be a short ball time game that kicks your butt.
For me:
1. AFM or Williams IJ. I spent hours playing those games back in my early collecting days.
2. TX Sector. I can't tell you how many games I've played on that one. A lot of them embarrassingly short. 2001 and Volley would be runner ups.