3D Realms games include Commander Keen and Wolfenstein 3D, as well as the Duke Nukem franchise. 3D Realms was founded in 1987 as Apogee Software by Scott Miller to publish his game Kingdom of Kroz. Prior to Apogee's founding, Miller had released a few games he had developed himself, as well as a couple "packs" of games developed by himself and others, under a shareware distribution model whereby the games were distributed for free in return for donations. Miller found that the standard shareware model was not viable for his games such as Beyond the Titanic (1986) and Supernova (1987); beginning with Kroz, the company pioneered the "Apogee model" of shareware distribution, wherein games were broken up into segments, with the first part released for free to drive interest in the other monetized portions. Soon after its founding, Apogee began publishing titles by other developers in addition to titles by Miller. In 1994, Apogee decided to launch different brand names for each genre of games they published; it created 3D Realms for 3D games. (Full list...)