I played a lot of Sim City 2000. Not so much the others on the list. I played the Duke Nukem demo and thought it was funny.
My favorites that I had and played for hours and hours on end growing up were:
1988: EGA Trek (myabandonware.com)
1989: Castle of the Winds (classicreload.com)
1989: MILLENNIUM: RETURN TO EARTH (myabandonware.com)
1990: Spaceward Ho! (myabandonware.com)
1992: Kiloblaster (classicdosgames.com)
1992: Star Control II (gog.com), Open sourced version (sc2.sourceforge.net)
1993: Solar Winds (playdosgames.com)
1993: Wing Commander: Privateer (gog.com)
1993: Zone 66 (myabandonware.com)
1994: Star Reach (myabandonware.com)
1995: Warcraft II (gog.com)
1996: Privateer 2: The Darkening (gog.com)
1997: Wing Commander: Prophecy (gog.com)
1999: Alpha Centauri (gog.com)
2000: Tachyon: The Fringe (gog.com)
I also spent countless hours playing Pokémon Blue on an emulator on a Windows 95 machine.
edit:
I just wanted to add that if you play Alpha Centauri it's worth using "Scient's Unofficial Patch" to get rid of all the bugs in the game:
Forgot about star control 2. We had a blast with the VS mode on the Sega Genesis.
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