Valve games

Portal

Release: 10 Oct 2007

Portal 2

Release: 18 Apr 2011

Left 4 Dead

Release: 17 Nov 2008

Left 4 Dead 2

Release: 17 Nov 2009

Half-Life

Release: 19 Nov 1998

Half-Life: Opposing Force

Release: 10 Nov 1999

Half-Life 2

Release: 16 Nov 2004

Counter-Strike

Release: 09 Nov 2000

Half-Life 2: Episode Two

Release: 09 Oct 2007

Counter-Strike: Condition Zero

Release: 23 Mar 2004

Counter-Strike: Source

Release: 01 Nov 2004

Half-Life 2: Episode One

Release: 01 Jun 2006

The Orange Box

Release: 10 Oct 2007

Team Fortress 2

Release: 10 Oct 2007

Counter-Strike: Global Offensive

Release: 21 Aug 2012

Half-Life: Blue Shift

Release: 12 Jun 2001

Dota 2

Release: 09 Jul 2013

Day of Defeat: Source

Release: 26 Sep 2005

Garry's Mod

Release: 24 Dec 2004

The Ship: Murder Party

Release: 15 Sep 2006

Team Fortress Classic

Release: 07 Apr 1999

Half-Life: Decay

Release: 14 Nov 2001

Half-Life: Source

Release: 01 Jun 2004

Day of Defeat

Release: 01 May 2003

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