...oh boy...
Which game do I play most ... when?
I have been playing rpgs since 1976ish. I have played literally dozens of systems in that time. At any given time there is one game that predominates, but not necessarily over time. The three games that have gotten the most time out of me overall have been (roughly in order of time spent on them) RuneQuest (2nd/3rd), D&D (OD&D, 3e, 3.wombat -- not really AD&D and only a glancing blow at 4e), and Ars Magica (2nd, 3rd, 4th, 5th).
How the heck am I supposed to answer this poll? Currently I am running Changeling (NWoD), and prior to that I ran Ars Magica (5th ed). I expect to play Spirit of the Century again and I have promised two different groups that there will be one-offs of Paranoia within the next couple of months. And for all I know there will be other systems this year.
I owe no system loyalty. The main thing is that I am trying to stay away from miniatures games, and rpgs that feel too much like them.