Ken Silverman is the developer responsible for, and most well known for, the BUILD Engine, used in Duke Nukem 3D, among other games. Besides a few early DOS games, his first popular game was the self-referential Ken's Labyrinth, published by Epic Megagames. His website contains plenty of info and downloads about these and other programming projects.
Official Ken Silverman website
Ken Silverman's Mobygames page
Ken Silverman's Wikipedia page
Games developed and/or published by Ken Silverman
Ken's Labyrinth (1993)
Super Silverbrothers (1992)
Breakout (1991)
Kentris (1991)