Final DOOM (1996), id Software, Inc.
Quake III: Arena (1999), Activision, Inc.
Final DOOM (1996), Atari, Inc.
Wolfenstein 3D (1994), Atari Corporation
Hexen: Beyond Heretic (1996), GT Interactive Software Corp.
DOOM II: Hell on Earth (1994),
Commander Keen: Keen Dreams (1992), Softdisk Publishing
Paganitzu (1991), Apogee Software, Ltd.
Catacomb 3-D (1992), Gamer's Edge, Softdisk Publishing
Commander Keen 6: Aliens Ate My Baby Sitter! (1991), FormGen, Inc.
Hovertank (1991), Softdisk Publishing
DOOM 64 (1997), Midway Games, Inc.
Dangerous Dave in the Haunted Mansion (1991), Softdisk Publishing
Spear of Destiny (1992), FormGen, Inc.
The Ultimate DOOM (1995), GT Interactive Software Corp.
Curse of the Catacombs (1993), Froggman
Commander Keen 5: The Armageddon Machine (1991), Apogee Software, Ltd.
Catacomb II (1991), Softdisk Publishing
The Catacomb Abyss (1992), Softdisk Publishing
DOOM (1995), Williams Entertainment Inc.
Wolfenstein 3D (1992), Apogee Software, Ltd.
Kingpin: Life of Crime (1999), Interplay Entertainment Corp.
Quake II (1997), Activision, Inc.
Dopefish Forever! (1997),
Slordax: The Unknown Enemy (1991), Softdisk Publishing
DOOM³: Resurrection of Evil (2005), Activision Publishing, Inc.
Quake II Mission Pack: Ground Zero (1998), id Software, Inc.
Commander Keen 3: Keen Must Die! (1990), Apogee Software, Ltd.
DOOM (1993), id Software, Inc.
Commander Keen (2001), Activision Publishing, Inc.
PARAGON (1991), Gamer's Edge, Softdisk Publishing
Dopefish Lives! (1997),
Commander Keen: Invasion of the Vorticons (1991), Precision Software Applications
Quake (1996), id Software, Inc.
DOOM³ (2004), Activision Publishing, Inc.
Quake III: Revolution (2001), Electronic Arts, Inc.
Shadow Knights (1990), Softdisk Publishing
Catacomb (1990), Softdisk Publishing
Commander Keen 2: The Earth Explodes (1990), Apogee Software, Ltd.
Quake II Mission Pack: The Reckoning (1998), Activision, Inc.
Quake III: Team Arena (2000), id Software, Inc.
Commander Keen 1: Marooned on Mars (1990), Apogee Software, Ltd.
Quake Mission Pack No 2: Dissolution of Eternity (1997), id Software, Inc.
DOOM³ (Limited Collector's Edition) (2005), Activision Publishing, Inc.
Commander Keen 4: Secret of the Oracle (1991), Apogee Software, Ltd.
Quake Mission Pack No 1: Scourge of Armagon (1997), id Software, Inc.

DOOM II: Hell on Earth (1994),
Hexen: Beyond Heretic (1996), GT Interactive Software Corp.
Wolfenstein 3D (1994), Atari Corporation
Commander Keen: Keen Dreams (1992), Softdisk Publishing
Final DOOM (1996), Atari, Inc.
Quake III: Arena (1999), Activision, Inc.
Final DOOM (1996), id Software, Inc.
Catacomb 3-D (1992), Gamer's Edge, Softdisk Publishing
The Catacomb Abyss (1992), Softdisk Publishing
The Ultimate DOOM (1995), GT Interactive Software Corp.
Spear of Destiny (1992), FormGen, Inc.
Curse of the Catacombs (1993), Froggman
Quake Mission Pack No 1: Scourge of Armagon (1997), id Software, Inc.
DOOM 64 (1997), Midway Games, Inc.
Quake II Mission Pack: Ground Zero (1998), id Software, Inc.
DOOM (1993), id Software, Inc.
Slordax: The Unknown Enemy (1991), Softdisk Publishing
DOOM³: Resurrection of Evil (2005), Activision Publishing, Inc.
Quake II (1997), Activision, Inc.
Kingpin: Life of Crime (1999), Interplay Entertainment Corp.
Quake III: Revolution (2001), Electronic Arts, Inc.
DOOM³ (2004), Activision Publishing, Inc.
Catacomb (1990), Softdisk Publishing
Quake (1996), id Software, Inc.
Quake III: Team Arena (2000), id Software, Inc.
Quake Mission Pack No 2: Dissolution of Eternity (1997), id Software, Inc.
Quake II Mission Pack: The Reckoning (1998), Activision, Inc.
DOOM (1995), Williams Entertainment Inc.
Wolfenstein 3D (1992), Apogee Software, Ltd.
Catacomb II (1991), Softdisk Publishing

Hovertank (1991), Softdisk Publishing
The Ultimate DOOM (1995), GT Interactive Software Corp.
Commander Keen 5: The Armageddon Machine (1991), Apogee Software, Ltd.
Slordax: The Unknown Enemy (1991), Softdisk Publishing
DOOM³: Resurrection of Evil (2005), Activision Publishing, Inc.
Final DOOM (1996), id Software, Inc.
DOOM³ (2004), Activision Publishing, Inc.
Quake III: Revolution (2001), Electronic Arts, Inc.
Quake III: Arena (1999), Activision, Inc.
Final DOOM (1996), Atari, Inc.
DOOM II: Hell on Earth (1994),
Commander Keen 2: The Earth Explodes (1990), Apogee Software, Ltd.
Quake II Mission Pack: The Reckoning (1998), Activision, Inc.
Quake III: Team Arena (2000), id Software, Inc.
Quake Mission Pack No 2: Dissolution of Eternity (1997), id Software, Inc.
Commander Keen 1: Marooned on Mars (1990), Apogee Software, Ltd.
DOOM³ (Limited Collector's Edition) (2005), Activision Publishing, Inc.
Commander Keen 4: Secret of the Oracle (1991), Apogee Software, Ltd.
Quake Mission Pack No 1: Scourge of Armagon (1997), id Software, Inc.
Quake II (1997), Activision, Inc.
Commander Keen 3: Keen Must Die! (1990), Apogee Software, Ltd.
Quake II Mission Pack: Ground Zero (1998), id Software, Inc.
DOOM (1993), id Software, Inc.
Commander Keen: Invasion of the Vorticons (1991), Precision Software Applications

Shadow Knights (1990), Softdisk Publishing
Dopefish Lives! (1997),
Commander Keen (2001), Activision Publishing, Inc.
PARAGON (1991), Gamer's Edge, Softdisk Publishing
Slordax: The Unknown Enemy (1991), Softdisk Publishing
Dopefish Forever! (1997),
Commander Keen: Keen Dreams (1992), Softdisk Publishing

DOOM³: Resurrection of Evil (2005), Activision Publishing, Inc.
The Ultimate DOOM (1995), GT Interactive Software Corp.
DOOM³ (Limited Collector's Edition) (2005), Activision Publishing, Inc.
DOOM³ (2004), Activision Publishing, Inc.
DOOM (1993), id Software, Inc.
DOOM (1995), Williams Entertainment Inc.

Catacomb (1990), Softdisk Publishing
Commander Keen (2001), Activision Publishing, Inc.
Catacomb II (1991), Softdisk Publishing
The Catacomb Abyss (1992), Softdisk Publishing
Paganitzu (1991), Apogee Software, Ltd.

Catacomb (1990), Softdisk Publishing
Catacomb II (1991), Softdisk Publishing
Hexen: Beyond Heretic (1996), GT Interactive Software Corp.
Catacomb 3-D (1992), Gamer's Edge, Softdisk Publishing
Curse of the Catacombs (1993), Froggman

Paganitzu (1991), Apogee Software, Ltd.
Rescue Rover (1991), Softdisk Publishing
Tiles of the Dragon (1993), Softdisk Publishing
Rescue Rover 2 (1991), Expert Software, Inc., Froggman, Softdisk Publishing

Rescue Rover (1991), Softdisk Publishing
Tiles of the Dragon (1993), Softdisk Publishing
Rescue Rover 2 (1991), Expert Software, Inc., Froggman, Softdisk Publishing

Tiles of the Dragon (1993), Softdisk Publishing

Hovertank (1991), Softdisk Publishing