Hocus Pocus

3D Realms is an American video game publisher and developer originally based in Garland, Texas and currently based in Aalborg, Denmark. It 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. These games were inconsistently marketed under the name Apogee Software Productions, though after the company was founded they were sold under the Apogee Software name. Miller found that the standard shareware model was not viable for his games such as Beyond the Titanic (1986) and Supernova (1987), and 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.