32,8 milijuna prodanih igara. U ovu cifru ne ulazi broj prodanih igara preko Steama.
http://www.totalgamingnetwork.com/main/showthread.php?t=181857
• Half-Life (Valve) / 1998 - 9.3 Million
• Half-Life: Opposing Force (PC, Gearbox) / 1999 - 1.1 Million
• Half-Life: Blue Shift (PC, Gearbox) / 2001 - 800,000
• Counter-Strike (PC, Valve) / 2000 - 4.2 Million
• Counter-Strike: Condition Zero (PC, Valve) / 2004 - 2.9 Million
• Counter Strike: Source (PC, Valve) / 2006 - 2.1 Million
• Counter-Strike (Xbox, Valve) / 2003 - 1.5 Million
• Half-Life 2 (Valve) / 2004 - 6.5 Million
• Half-Life 2: Episode One (PC, Valve) / 2006 - 1.4 Million
• The Orange Box (Valve) / 2007 - 3 Million
(Half-Life 2 HL2: Episode One, HL2: Episode Two, Portal, Team Fortress 2)