Ultima IV, The Computer Game That Led to Enlightenment
newyorker.com
newyorker.com
Modern games have better graphics but they don't have the same richness that Ultima had.
I'm not sure though if I'd have the time and patience any more for this, even if it felt a lot more rewarding.
I was in fifth grade when I played--I still remember painfully mapping out nearly the entire world on graph paper. The first time I ever really deeply thought about morality and ethics was because of Ultima IV. It honestly probably changed my life, at least a little.