Ken's Labyrinth was released by Ken Silverman in 1993. He started work on a 3-D game engine at 17 years old, after seeing Wolfenstein 3D. Ken Silverman later went on to create the Build engine, which was used in, among other games, Duke Nukem 3D.
The official Ken's Labyrinth page is located on Ken's Silverman's website, where all official versions of the game can be downloaded. In addition, some early development tools are also available.
A modern tool for creating total conversions of all versions of Ken's Labyrinth was released in 2022; KKIT/SDL.