Blue games are shareware, green games are freeware, and red games have officially abandoned their copyright into the public domain (abandonware).

Game	Developers	Publishers	Genres	Year	OS	Rating
Abuse	Crack dot Com	Crack dot Com	Platform	1995	DOS	9.2
Beneath a Steel Sky	Revolution Software	Revolution Software	Graphic Adventure	1994	DOS	0.0
Beyond the Titanic	Apogee Software	Apogee Software	Interactive Fiction	1986	DOS	0.0
Blood II: The Chosen	Monolith Productions	GT Interactive	3D Shooter	1998	Win9x	3.5
Catacomb	John Carmack	Softdisk Publishing	Adventure	1990	DOS	0.0
Catacomb Abyss, The	Gamer's Edge (Softdisk Publishing)	Softdisk Publishing	3D Shooter	1992	DOS	0.0
Chopper Commando	Mark Currie	Mark Currie	Simulation	1990	DOS	9.1
Cyberdogs	Ronny Wester	Ronny Wester	Shooter	1994	DOS	0.0
Descent	Parallax Software	Interplay Productions	3D Shooter	1994	DOS	9.2
Descent II	Parallax Software	Interplay Productions	3D Shooter	1995	DOS	8.0
Doom	id Software	id Software	3D Shooter	1993	DOS, Win9x	9.4
Duke Nukem 3D	3D Realms (Apogee Software)	3D Realms (Apogee Software), FormGen Corporation	3D Shooter	1996	DOS	9.2
God of Thunder	CSE Games	Impulse Software	Adventure	1994	DOS	9.3
Heretic	Raven Software	id Software	3D Shooter	1994	DOS	7.3
Hexen: Beyond Heretic	Raven Software	id Software	3D Shooter	1995	DOS	7.3
Hyperoid	Hutchins Software	Hutchins Software	Shooter	1991	Win16	0.0
In Pursuit of Greed	Mind Shear Software	Softdisk Publishing	3D Shooter	1995	DOS	7.0
Jump 'n Bump	Brainchild Design	Brainchild Design	Platform	1998	DOS	8.0
Jumpman Lives!	Shamusoft Designs	Apogee Software	Platform	1991	DOS	0.0
Ken's Labyrinth	Ken Silverman	Epic MegaGames	3D Shooter	1993	DOS	7.0
Kentris	Ken Silverman	Ken Silverman	Puzzle	1991	DOS	0.0
Kiloblaster	Epic MegaGames	Epic MegaGames	Shooter	1992	DOS	10.0
Mines	James L. Dean	James L. Dean	Interactive Fiction	2006	DOS	0.0
Paku Paku	Jason M. Knight	Jason M. Knight	Arcade	2011	DOS	7.0
Quake	id Software	id Software	3D Shooter	1996	DOS	9.2
Rise of the Triad: The HUNT Begins	Apogee Software	Apogee Software	3D Shooter	1994	DOS	8.8
Shadow Warrior	3D Realms (Apogee Software)	3D Realms (Apogee Software)	3D Shooter	1997	DOS	8.2
Snarf	Everett Kaser Software	Everett Kaser Software	Arcade	1988	DOS	0.0
Spear of Destiny	id Software	FormGen Corporation	3D Shooter	1992	DOS	7.0
Supernova	Apogee Software	Apogee Software	Interactive Fiction	1987	DOS	0.0
Wolfenstein 3D	id Software	Apogee Software	3D Shooter	1992	DOS	8.4
Word Whiz	Apogee Software	Apogee Software	Educational	1988	DOS	0.0
Xargon	Epic MegaGames	Epic MegaGames	Platform	1994	DOS	8.4