So, Tactics and I finished our first game of Dawn of Worlds. It was really fun! We played several hours on both of two consecutive days, so, yes, it can be a long game, but much less than the time commitment for getting involved with most RPG campaigns. And now we have a complex continent with various interesting races, and a history with which we are both equally familiar, so either of us could easily GM an adventure or full campaign in that setting, and the other would be playing a character in a familiar world with known deities and history. I'm already mentally playing with exactly how the races and classes would work ... Fun stuff!