All Valve Games

2005 Counter-Strike 1 Anthology IBM PC Compatible
2004 Counter-Strike: Source IBM PC Compatible
2003 Day of Defeat IBM PC Compatible
2006 Day of Defeat: Source IBM PC Compatible
2006 Deathmatch Classic IBM PC Compatible
2011 Dota 2 IBM PC Compatible
1998 Half-Life IBM PC Compatible
2005 Half-Life 1 Anthology IBM PC Compatible
2004 Half-Life 2 IBM PC Compatible
2004 Half-Life 2: Collector's Edition IBM PC Compatible
2004 Half-Life 2: Deathmatch IBM PC Compatible
2006 Half-Life 2: Episode One IBM PC Compatible
2006 Half-Life 2: Episode One [Retail Box] IBM PC Compatible
2008 Half-Life 2: Episode Pack IBM PC Compatible
2011 Half-Life 2: Episode Three IBM PC Compatible
2007 Half-Life 2: Episode Two IBM PC Compatible
2005 Half-Life 2: Game of the Year Edition IBM PC Compatible
2006 Half-Life 2: Holiday 2006 Collection IBM PC Compatible
2006 Half-Life Deathmatch: Source IBM PC Compatible
1999 Half-Life: Adrenaline Pack IBM PC Compatible
2000 Half-Life: Adrenaline Pack [European] IBM PC Compatible
2000 Half-Life: Counter-Strike IBM PC Compatible
1999 Half-Life: Game of the Year Edition IBM PC Compatible
1999 Half-Life: Initial Encounter IBM PC Compatible
2004 Half-Life: Source IBM PC Compatible
2008 Left 4 Dead  IBM PC Compatible
2009 Left 4 Dead 2 IBM PC Compatible
2010 Left 4 Dead 2: The Passing IBM PC Compatible
2007 The Orange Box [Half-Life 2] IBM PC Compatible
2007 Portal IBM PC Compatible
2011 Portal 2 IBM PC Compatible
2000 Ricochet IBM PC Compatible
2007 Team Fortress 2 IBM PC Compatible