Alien Shooter
Aperture Tag
Beholder
Beholder 2
Beholder 3
Black Mesa
Boris and the Dark Survival
Cookie Clicker
Do Not Feed the Monkeys
Doki Doki Literature Club
DOOM (1993)
DOOM II
DOOM 3
DOOM 64
DUSK
Entropy : Zero
Entropy : Zero 2
Evacuation
Everlasting Summer
F.E.A.R.
F.E.A.R.: Extraction Point
F.E.A.R.: Perseus Mandate
Five Nights at Freddy's
FNaF World
Freddy Fazbear's Pizzeria Simulator
Game Dev Tycoon
Half-Life
Half-Life: Opposing Force
Half-Life: Blue Shift
Half-Life: C.A.G.E.D.
Half-Life 2
Half-Life 2: Episode One
Half-Life 2: Episode Two
Half-Life 2: Lost Coast
Heretic: Shadow of the Serpent Riders
HeXen II
Hollow Knight
Hunt Down The Freeman
Left 4 Dead
Left 4 Dead 2
Logistique
MINERVA: Metastasis
Outcore
Papers, Please
People Playground
Plague Inc: Evolved
Plants vs. Zombies: Game of the Year
Please, Don’t Touch Anything
Portal
Portal 2
Portal Reloaded
Portal Stories: Mel
Portal: Forbidden Testing Tracks
POSTAL
POSTAL 2
Postal 3
POSTAL Brain Damaged
POSTAL Redux
Progressbar95
Prospekt
Quake
Quake 2
Quake 4
Rexaura
S.T.A.L.K.E.R.: Call of Pripyat
S.T.A.L.K.E.R.: Clear Sky
S.T.A.L.K.E.R.: Shadow of Chernobyl
Slime Rancher
Snowdrop Escape
Terraria
The Henry Stickmin Collection
The Stanley Parable
TheoTown
Thinking with Time Machine
Totally Accurate Battle Simulator
Ultimate Custom Night
Undertale
Wilson Chronicles
Wolfenstein 3D