I just did some busywork picking out what I think were the impact-wise most important games out of these (roughly half of them - super subjective :)), and then sorted them by release year, for your browsing pleasure!:
Robotron: 2084 (1986) by Vid Kidz for the Atari 7800
Robotron: 2084 (1986) by Vid Kidz for the Atari 7800
https://github.com/videogamepreservation/robotron-7800
Galaga (1987) by Namco Limited for the Atari 7800
https://github.com/videogamepreservation/galaga-7800
Dig Dug (1987) by Namco Limited for the Atari 7800
https://github.com/videogamepreservation/digdug-7800
Centipede (1987) by Atari, Inc. for the Atari 7800
https://github.com/videogamepreservation/centipede-7800
Asteroids (1987) by Atari, Inc. for the Atari 7800
https://github.com/videogamepreservation/asteroids-7800
Ms. Pac-Man (1987) by General Computer Corporation for the Atari 7800
https://github.com/videogamepreservation/mspacman-7800
Commando (1989) by Capcom Co., Ltd. for the Atari 7800
https://github.com/videogamepreservation/commando-7800
Prince of Persia (1989) by Jordan Mechner for the Apple II
https://github.com/videogamepreservation/princeofpersia
Hovertank One (1991) by id Software, Inc.
https://github.com/videogamepreservation/hovertank3d
Wolfenstein 3D (1992) by id Software, Inc. for DOS
https://github.com/videogamepreservation/wolf3d
DOOM (1993) by id Software, Inc.
https://github.com/videogamepreservation/doom
Rise of the Triad: Dark War (1994) by Apogee Software, Ltd.:
https://github.com/videogamepreservation/rott
Beneath a Steel Sky (1994) by Revolution Software.
https://github.com/videogamepreservation/bass
Heretic (1994) by Raven Software
https://github.com/videogamepreservation/heretic
Gravity Force 2 (1994) by Bits Productions
https://github.com/videogamepreservation/gravityforce2
Descent (1995) by Parallax Software Corp.
https://github.com/videogamepreservation/descent
Hexen: Beyond Heretic (1995) by Raven Software
https://github.com/videogamepreservation/hexen
Abuse (1995) by Crack dot Com
https://github.com/videogamepreservation/abuse
Duke Nukem 3D (1996) by 3D Realms Entertainment, Inc.
https://github.com/videogamepreservation/dukenukem3d
Descent II (1996) by Parallax Software Corp.
https://github.com/videogamepreservation/descent2
Quake (1996) by id Software, Inc
https://github.com/videogamepreservation/quake
Quake II (1997) by id Software, Inc.
https://github.com/videogamepreservation/quake2
Postal (1997) by Running With Scissors
https://github.com/videogamepreservation/postal
FreeSpace 2 (1999) by Volition, Inc.
https://github.com/videogamepreservation/freespace2
Homeworld (1999) by Relic Entertainment
https://github.com/videogamepreservation/homeworld
Aliens versus Predator (1999) by Rebellion Developments Ltd.
https://github.com/videogamepreservation/avp
MechCommander 2 (2001) by FASA Studio
https://github.com/videogamepreservation/mechcommander2
DOOM³ (2004) by id Software, Inc.
https://github.com/videogamepreservation/doom3