Valve Corporation

Valve Corporation is an American video game developer and digital distributor company in Bellevue, Washington. It was started in 1996 by Gabe Newell and Mike Harrington, two Microsoft employees in the past. The company is widely known for Steam and the Half-Life series. Also, the company develops the SteamOS,^[2] which their all-in-one handheld hardware, called Steam Deck, uses.^[3]

Valve Corporation

Entrance to the offices of Valve
Company type	Private company
Industry	Video game industry Digital distribution
Founded	August 24, 1996; 28 years ago (1996-08-24) Kirkland, Washington, United States
Founders	Gabe Newell Mike Harrington
Headquarters	Bellevue, Washington , United States
Number of locations	2 offices
Area served	Worldwide
Key people	Gabe Newell (CEO)
Number of employees	~330[1] (2013)
Subsidiaries	Valve S.a.r.l.
Website	www.valvesoftware.com

Games developed

Name	Release year	Genre	Can be played on:
			Windows	Mac	Linux / SteamOS	Xbox	Xbox 360	PS3	Xbox One	PS4
Half-Life	1998	First-person shooter
Half-Life: Opposing Force	1999	First-person shooter
Team Fortress Classic	1999	First-person shooter
Ricochet	2000	First-person shooter
Counter-Strike	2000	First-person shooter
Half-Life: Blue Shift	2001	First-person shooter
Deathmatch Classic	2001	First-person shooter
Day of Defeat	2003	First-person shooter
Counter-Strike: Source	2004	First-person shooter
Half-Life 2	2004	First-person shooter
Half-Life 2: Deathmatch	2004	First-person shooter
Half-Life: Source	2004	First-person shooter
Day of Defeat: Source	2005	First-person shooter
Half-Life 2: Lost Coast	2005	First-person shooter
Half-Life Deathmatch: Source	2006	First-person shooter
Half-Life 2: Episode One	2006	First-person shooter
Half-Life 2: Episode Two	2007	First-person shooter
Portal	2007	First-person shooter / Puzzle
Team Fortress 2	2007	First-person shooter
Left 4 Dead	2008	First-person shooter
Left 4 Dead 2	2009	First-person shooter
Alien Swarm	2010	Third-person shooter
Portal 2	2011	First-person shooter / Puzzle
Counter-Strike: Global Offensive	2012	First-person shooter
Dota 2	2013	Multiplayer Online Battle Arena (MOBA)
Half-Life: Alyx	2020	First-person shooter