I think the difference between player empowerment and player fulfillment is player empowerment is the beginning of it which is the ability to do something - maybe something important, maybe something fantastical, something satisfying - something that makes us feel good. To me, fulfillment is how you answer - at the end of any experience you answer the question, “Was that worth doing?” And “worth doing” has different flavors. It has a flavor of, “Eh, that was worth spending an afternoon doing that. That was kind of fun.” But a lot of games we give days, weeks, months, years, sometimes, of our lives regularly scheduled play. We give big pieces of our lives. Anytime we give a big piece of our life to something we want to say that mattered, that it was worth doing, that we were not just wasting this time we’ve got. The more of your time that you give a game the more important it is that you be able to look the designer in the eye at the end of that and say, “Yeah, that was worth it.” That’s fulfillment.