Way back, on a Dragon 32 "ROM trap", games were few and expensive, so I wrote my own; "Space Invaders", "Pack Man", a helicopter rescue game, beat the maze, a few more, I think.
Hack, on a UNIX machine. Actually, I have a PC version somewhere.
Leisure suit larry

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Space quest.
Mean Streets. I played it for the flight sim part only.
Jetfighter I and II (III sucked), oh, and all the other ancient flight sims where you flew blocky airplanes around in jerks over green plains with brown pyramid-shaped mountains here and there.
Descent I, built my own levels. DII sucked, but the later ones were de(s)cent

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Duke Nukem, "Damn, I'm looking GOOD".
Then of course, playing MS Combat flight simulator. Especially online was about as much fun as you can get with your clothes on.
Yeah, those were the days, for shure.
Hans