Valve Corporation

Valve Corporation, previously known as Valve Software, or simply Valve (stylized VALVe), is a video game development and digital distribution company. It's mostly known for creating the Half-Life series, along with several other popular titles. During the beta phase of Counter-Strike, Valve teamed up with Minh Le and Jess Cliffe and eventually helped them create a stand-alone game.

Games

 * Half-Life
 * Half-Life: Opposing Force
 * Half-Life: Blue Shift
 * Half-Life Deathmatch: Source
 * Half-Life: Day One (promotional)
 * Half-Life: Uplink (promotional)
 * Half-Life: Source
 * Half-life 2
 * Half-Life 2: Deathmatch
 * Half-Life 2: Lost Coast
 * Half-Life 2: Episode One
 * Half-Life 2: Episode Two
 * Counter-Strike
 * Counter-Strike: Condition Zero
 * Counter-Strike: Source
 * Counter-Strike: Global Offensive
 * Team Fortress Classic
 * Team Fortress 2
 * Day of Defeat
 * Day of Defeat: Source
 * Portal
 * Portal 2
 * Left 4 Dead
 * Left 4 Dead 2
 * Deathmatch Classic
 * Ricochet
 * The Orange Box
 * The Black Box (canceled)
 * Alien Swarm
 * Dota 2