Ken's Labyrinth
It was fully coded by Ken Silverman , who later went on to design the Build engine that was used for rendering a first-person viewpoint in 3D Realms's "Duke Nukem 3D" ( 1996 ) and most recently in "Ion Fury" ( 2019 ) . 
<triplet> Build engine <subj> Ken Silverman <obj> developer <triplet> Duke Nukem 3D <subj> Build engine <obj> software engine