I still have df1, 2, oucast, and jka installed
I boughta joystick and fired up xwing, but oof...that somw rough graphics
So, the thing about X-wing is that, technically, it's 2.5 different games. You've got the floppy disk version that's just flat 3D shapes, you've got the CD version that added the Gouraud shading, but which otherwise kept things the same, and you have the 1998 version built on the XvT engine.
The XvT engine version is the
prettiest of the 3, but it needs a 3DFX graphics wrapper to really perform well and get the hardware acceleration needed for genuinely decent looking graphics. However, the
gameplay of the CD version is, in my opinion, the best of the batch. You get the Gouraud shading, which is an improvement over the base graphics, but the rest of the experience is just better. You can make your own pilots who accompany you, improve in skill, get awarded medals, and can be killed/MIA. You get to see the take off/landing sequences showing your ship being damaged, too. It was always a thrill to barely survive a mission with a beat-to-hell hull, land, and see just how shot up your ship was. And you get the iMuse music, which ebbs and flows with the gameplay. XvT Balance of Power, I think, did this (sort of) with CD redbook audio, which switched tracks on your CD player to play actual movie music, and it was cool, but it was nowhere near as fluid.
X-Wing Alliance, on the other hand, is really pretty if you actually apply the fan-made graphical upgrades. Worth a play as long as you can get your joystick working right.
The first MP game I ever played was JK2 so even though I had Duke Nukem 3D I never played it. I saw some stuff afterward and wish I had!
DN3D was my first MP game, and I have a lot of fond memories of it. We played it in college once we got T1 lines in our dorm rooms in 2nd semester of freshman year, and my friends and I spent many hours blowing each other up and learning that, surprise!, rockets fly through teleporters. Such a fun game.
I tried playing DF2 a year or two ago when I got my new PC (RTX 3080) and I was getting some weird texture bugs once I got to that planet where you retrieve your lightsaber from his dad's house. It was that effect like when you'd film your TV with a camcorder and it just looked like it was going to infinity. It was really distracting. I could never find any fix for that, which is a bummer.
Yeah, again, you may need a Voodoo/3DFX wrapper for the graphics. Those old games either pre-date or are contemporaneous with Direct3D becoming the default video driver, but the Voodoo2 by 3DFX was actually a way better card for games of that era.