Apogee Software was founded in 1987 by Scott Miller, creator of the famous KROZ series of ASCII-based games, among many others. Over time Apogee grew to become one of the premier shareware developers / publishers, including games such as the Commander Keen series, Wolfenstein 3D, Duke Nukem, and many more. Miller's model of providing the first game in the series for free, and charging for the rest, became known as the "Apogee Model". Apogee changed their public name to 3D Realms in 1996, although they have recently revived the Apogee name. (See also '3D Realms'.)
Official Apogee Software website
Apogee Software's Mobygames page
Apogee Software's Wikipedia page
Games developed and/or published by Apogee Software
Death Rally (1996)
Stargunner (1996)
Xenophage: Alien BloodSport (1996)
Realms Of Chaos (1995)
Boppin (1994)
Hocus Pocus (1994)
Mystic Towers (1994)
Paganitzu (1994)
Raptor: Call of the Shadows (1994)
Rise Of The Triad (1994)
Wacky Wheels (1994)
Alien Carnage (1993)
Bio Menace (1993)
Blake Stone: Aliens of Gold (1993)
Duke Nukem II (1993)
Major Stryker (1993)
Monster Bash (1993)
Cosmo's Cosmic Adventure (1992)
Math Rescue (1992)
Secret Agent (1992)
Wolfenstein 3D (1992)
Word Rescue (1992)
Arctic Adventure (1991)
Dark Ages (1991)
Duke Nukem (1991)
Jumpman Lives! (1991)
Monuments of Mars (1991)
Caves of Thor (1990)
Crystal Caves (1990)
Pharaoh's Tomb (1990)
Word Whiz (1990)
Adventure Fun-Pak (1988)
Maze Runner (1988)
Puzzle Fun-Pak (1988)
Trivia Whiz (1988)
Supernova (1987)