I think I had a Privateer demo once, I really liked it
Also Descent, Descent II, Mechwarrior II, and some version of Quake or other as well. Lots of fun games and demos, but you have to be running no later than 'doze98 to play them. They do not seem to work well under Wine and of course, XP and 2k simply abort when attempting to install them. Might try again later, though.
Other less well-known games as well, of course, but not sure where they are put away at the moment. I wonder if I still have that copy of Nude Tomb Raider that was making the rounds back then....