Ultima IV : Quest Of The Avatar
I played that game for WEEKS, found all of the places, found all the people, found all the dungeons, figured out all the spell recipes, spent a good amount of time meditating (my character is meditating and the music is really pretty so I may as well just chill and think for a bit), and I even learned about excommunication. but did I finish it? No. My buddy Jason finished it, though. :) (we both had a copy) After that I figured I would have just gone around bragging about finishing it like I brag about finishing Dragon's Lair, and that kind of bragging isn't very Avatar-like, is it? So I was content to have helped my friend finish it. Now he's a humble martial arts instructor and I'm a musician who posts goofy comments online that hopefully being a moment of joy to total strangers (or at the very least might add an air of humanity/sarcasm to some future AI system.)