Technically, Descent was a marvel of its era. While Doom used sprites for enemies, Descent utilized fully 3D polygonal models for its robotic antagonists. This allowed enemies to react and move with a complexity previously unseen. Furthermore, the level design took full advantage of the 3D environment. Portals and tunnels could lead anywhere—ceilings became floors, and secrets were often tucked away in "vertical" alcoves that players of traditional shooters would never think to check. The Legacy of the 6DoF Genre
If you are looking to run this specific file on a modern PC, you will likely need an emulator or a source port: File: Descent-10-pc.zip ...
: The most common way to run the original .exe found inside the ZIP on modern Windows DOSBox Official . Technically, Descent was a marvel of its era