Half-Life: Decay
PlayStation 2
Valve Corporation, Gearbox Software
Half-Life 2: Lost Coast
macOS, Windows, Linux
Valve Corporation
Half-Life: Blue Shift
Half-Life 2: Episode Two
macOS, Windows, PlayStation 3, and 2 more
Half-Life
macOS, Windows, PlayStation 2, and 1 more
Gearbox Software, Valve Corporation
Half-Life 2: Deathmatch
Half-Life: Source
Half-Life 2
Android, Linux, macOS, and 4 more
Half-Life: Alyx
Linux, Windows
Campo Santo, Valve Corporation
Half-Life 2: Episode One
Half-Life: Opposing Force
Black Mesa
Crowbar Collective