Civilization II. This runs on System 9; I need an emulator to play it for the past decade or so.
I used to play Master of Orion III, but that no longer functions on Mac systems later than 10.4. I tried the newest MoO, but it was much weaker gameplay value, much less interesting (read: ridiculously humanoid) aliens. I have secured an old windows package to run under boot camp, and may succeed in resurrecting a favorite gaming experience.
I think I might play Civilization II continually for 25+ years in part to channel aggression against NT's, who have persecuted me en masse literally for as long as I can remember.... I always used to wonder why I seemed to be a "bully magnet".
_________________
Diagnosed with severe ADHD [combined subtype] in 2012, age of 52. "Informally diagnosed" in 2021 as on the spectrum by two professional psychologists, deciding independently.
The world is not merely stranger than we suppose. It is stranger than we can suppose.
J. B. S. Haldane, (1892 – 1964) British biochemist.