Moddable

Grand Theft Auto V

The Elder Scrolls V: Skyrim

Half-Life 2

Grand Theft Auto: San Andreas

Counter-Strike: Global Offensive

Left 4 Dead 2

Grand Theft Auto: Vice City

Grand Theft Auto IV

Team Fortress 2

Fallout: New Vegas

Half-Life

Call of Duty: Modern Warfare 2

Half-Life 2: Episode One

Sid Meier's Civilization V

The Elder Scrolls V: Skyrim Special Edition

Fallout 3

Call of Duty 4: Modern Warfare

Left 4 Dead

Grand Theft Auto III

Garry's Mod

Just Cause 3

Cities: Skylines

Counter-Strike: Source

Star Wars: Knights of the Old Republic

SOMA

Sid Meier’s Civilization VI

Just Cause 2

S.T.A.L.K.E.R.: Shadow of Chernobyl

XCOM 2

Amnesia: The Dark Descent

Call of Duty: World at War

Goat Simulator

Don't Starve

Crysis

POSTAL 2

Torchlight II

The Elder Scrolls III: Morrowind

Fallout 3: Game of the Year Edition

S.T.A.L.K.E.R.: Call of Pripyat

Star Wars: Knights of the Old Republic II – The Sith Lords

Euro Truck Simulator 2

Saints Row 2

S.T.A.L.K.E.R.: Clear Sky

Killing Floor

Star Wars: Battlefront II (2005)

Factorio

Game Dev Tycoon

Crusader Kings II

Mount & Blade: Warband

Shadowrun Returns

DOOM II

Alien Swarm

Stellaris

The Elder Scrolls IV: Oblivion Game of the Year Edition

Tabletop Simulator

Torchlight

Star Wars Jedi Knight: Jedi Academy

Doom 3

Total War: SHOGUN 2

RimWorld