Reply 60 of 63, by awgamer
Based on the criteria of oldest computer game you actually like, Beneath Apple Manor 1978 Apple II. It's on a PC, I like it well enough, and it's the oldest fitting the criteria, failing that Smooth Max 1979 Apple II which I like better but Beneath Apple Manor seems to fit. I liked Zork which came out in 1977 but it came out on a PDP-10 mainframe.