Major Productions

Alien Swarm

Aperture Tag

Half-Life: Blue Shift

Counter-Strike

Counter-Strike (series)

Counter-Strike Neo

Counter-Strike Online

Counter-Strike: Condition Zero

Counter-Strike: Global Offensive

Counter-Strike: Source

The Crossing

Day of Defeat

Day of Defeat: Source

Deathmatch Classic

Dota 2

Gunman Chronicles

Half-Life (series)

Half-Life (video game)

Half-Life 2

Half-Life 2: Deathmatch

Half-Life 2: Episode One

Half-Life 2: Episode Two

Half-Life 2: Lost Coast

Half-Life 2: Survivor

Half-Life: Decay

Half-Life: Opposing Force

Half-Life: Source

Left 4 Dead

Left 4 Dead 2

The Orange Box

Portal (video game)

Portal 2

Ricochet (2000 video game)

Team Fortress 2

Team Fortress Classic