I have never finished a Final Fantasy game since Final Fantasy 4! The bloody games are way to long and take too much time that I rather spend on something more productive in life. Also, I have never finished any Resident Evil beyond Resident Evil 2, because it became boring after the second game and I grew out of zombie games. I have never finished a Gran Turismo game ever, but I did come close to finishing Gran Tursimo 3, I simply couldn't finished the last few races due to me lacking funds to upgrade my fastest car. I have never finished a Mario game since Mario World nor have I ever finished a Zelda game since Legend of Zelda - however, one of the best Super NES games I ever finished was "The Secrets of Evermore," which I highly recommend people play!
Truth is, I rarely finish 80% of the games I've played, but the ones I did are still embedded in my mind and always brings good ole game memories when I think of them.