Counter-Strike: Source was initially released as a beta to members of the Valve Cyber Café Program on August 11, 2004. On August 18, 2004, the beta was released to owners of Counter-Strike: Condition Zero as well as those who had received a Half-Life 2 voucher bundled with some ATI Radeon video cards. The game was included with Half-Life 2 bundles, which were released on November 16, 2004. On October 11, 2006, Valve released an experimental update entitled Dynamic Weapons Pricing. Under this system, item prices are determined based on their demand the previous week. On March 5, 2010, Valve Corporation announced the release of games from its first-party library, including games from the Counter-Strike series, for Mac OS X. The ports were slated for release in April 2010. Valve employed Hidden Path Entertainment to provide support on updating Counter-Strike: Source. On May 7, 2010, Valve released an update that includes new features and functionality developed in collaboration with Hidden Path Entertainment. These include 144 (now 146) new achievements, a new domination and revenge system, similar to that of Team Fortress 2, player stats, an upgrade to the Source engine and more. On June 23, 2010, Valve released the beta to the public alongside the promised OS X version. On February 5, 2013, Valve released a port of Counter-Strike: Source for Linux. Counter-Strike: Source was the first publicly released game by Valve Corporation to run on the Source engine. Counter-Strike: Source was initially released as a beta to members of the Valve Cyber Café Program on August 11, 2004.On August 18, 2004, the beta was released to owners of Counter-Strike: Condition Zero and those who had received a Half-Life 2 voucher bundled with some ATI Radeon video cards. While the original release only included a version for Microsoft Windows, the game eventually received a port to OS X on June 23, 2010 with a Linux port afterwards in 2013
Counter-Strike: Source was met with positive reviews from professional critics. Metacritic, a review aggregator website, awarded Source a rating of 88 out of a possible 100 based on 9 critic's reviews. However, Source received some criticism by the competitive community, who believed that the game's skill ceiling was significantly lower than that of Counter-Strike 1.6.