Play Trench Warfare online - freeware (installed)

Alien Trilogy

First-Person Shooter, 1996
Playable demo (installed), Playable demo

Chex Quest

First-Person Shooter, 1996
Full version (installed), Freeware

The Hidden Below

First-Person Shooter, 1994
Playable demo (installed), Playable demo

Spear of Destiny

Also known as Wolfenstein 3D: Spear of Destiny, SoD

First-Person Shooter, 1992
Playable demo (installed), Playable demo

Terminal Velocity

Also known as Velocity Brawl

First-Person Shooter, 1995
Shareware (installed), Shareware, Soundtrack

Descent II

Also known as Descent 2

First-Person Shooter, 1995
Playable demo (installed), Playable demo, Playable demo, Preview, Extra

Heretic

First-Person Shooter, 1994
Shareware (installed), Shareware

Rex Blade: The Apocalypse

First-Person Shooter, 1996
Playable demo

Spectre

First-Person Shooter, 1992
Playable demo