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| Game | Release | Developer |
|---|---|---|
 | Aug 21, 2012 | Valve |
 | Nov 16, 2009 | Valve |
 | Oct 10, 2007 | Valve |
 | Oct 10, 2007 | Valve |
 | Nov 30, 2004 | Valve |
 | Nov 1, 2004 | Valve |
 | Mar 1, 2004 | Valve |
 | Nov 19, 1998 | Valve |
 | Jun 20, 2019 | Valve |
| Apr 18, 2011 | Valve | |
| Nov 17, 2008 | Valve | |
| Oct 10, 2007 | Valve | |
| Jun 1, 2006 | Valve | |
| May 1, 2006 | Valve | |
| May 1, 2003 | Valve | |
| Jun 1, 2001 | Valve | |
| Jul 9, 2013 | Valve | |
| Mar 23, 2020 | Valve | |
| Jul 19, 2010 | Valve | |
| Jul 12, 2010 | Valve | |
| Nov 16, 2004 | Valve | |
| Nov 28, 2018 | Valve | |
| Jul 10, 2012 | Valve | |
| — | Valve | |
| Feb 22, 2016 | Valve | |
| Nov 1, 2000 | Valve | |
| Mar 1, 2022 | Valve | |
| Mar 1, 2004 | Valve | |
| — | Valve | |
| — | Valve |
