NBlood VS dxx-rebirth

NBlood/Rednukem/PCExhumed - Reverse-engineered ports of Build games using EDuke32 engine technology.

NBlood - Based on eDuke32 - Blood, Duke Nukem 3D and Powerslave/Exhumed

I recommend either using BuildGDX or PCExhumed.

u/d10sfan has added NBlood Exhumed and raze source ports for PowerSlave (DOS Classic Edition). Thanks to that, native Linux ports of the game can be played as Steam games.

You could try nblood it should run on you're system https://github.com/nukeykt/NBlood

https://github.com/nukeykt/NBlood/blob/master/README.md literally tells you how to do it.

And that's the first level of Descent. :) I literally just started a brand-new game yesterday of Descent. DX-Rebirth.

Find a remake of the game ported to a modern engine. https://www.dxx-rebirth.com/ appears to be a port of Descent 1 and 2 to the Source engine. It won't help with you running the 3DFX version, of course, but this might actually be better?

I loved this game. You can still play it with DXX Rebirth

I would look at DXX rebirth, https://www.dxx-rebirth.com even if you just want to add the expansions to your steam version, you should be able to use its instructions to add the levels to your version.

Descent 2 - so long since I last played any Descent game I forgot how the experience was, but hey there's a source port!

Or if you still want to play the originals, the DXX Rebirth mods also make it easy to play on modern computers!