Source

Wikidata

Cover for Left 4 Dead.

Left 4 Dead

macOS, Windows, Xbox 360

Turtle Rock Studios, Valve Corporation

Cover for Portal 2.

Portal 2

Linux, Xbox 360, PlayStation 3, and 2 more

Valve Corporation

Cover for Portal.

Portal

Android, Linux, Xbox 360, and 3 more

Valve Corporation

Cover for Half-Life 2: Lost Coast.

Half-Life 2: Lost Coast

macOS, Windows, Linux

Valve Corporation

Cover for Black Mesa.

Black Mesa

Linux, Windows

Crowbar Collective

Cover for Half-Life 2.

Half-Life 2

Android, Linux, macOS, and 4 more

Valve Corporation

Cover for Half-Life 2: Episode One.

Half-Life 2: Episode One

macOS, Windows, PlayStation 3, and 2 more

Valve Corporation