Hands down, the best games from the 90s was Descent. The first 3D, 360° shooter. This game forced me to buy one of those fancy joysticks that would allow me to really become one with my environment. When Descent 3 came about in 1999, my computer of the time was barely able to play it. I purchased the Linux build of Descent 3 which was my first Linux game I purchased and I still enjoy it today from time to time as it is still a blast to play.
Descent 1 and 2 have been open sourced and you are able to get updated and upgraded graphics which only make the Descent experience that much better.
I used to be all over those games. I even did multiplayer via dial-up with my buds back in the day! I can heartily recommend dxx-rebirth 100%! I use it on arch and it makes Descent a blast to play today, just like Doom source ports do the same for that.
Retro games have started interesting me especially since I haven’t gotten a GPU yet, but next month I am buying an RX 560 Kings Quest Entire Collection can be purchased on Steam for less than $4 on Here
I cannot begin to tell you the thousands of hours I spent playing Descent. But, to put a time frame on it, I first played it on a coax network ( 10baseT ). I was lucky enough to have a Thrustmaster joystick back then.