Release

When Counter-Strike was published by Sierra Entertainment/Vivendi Universal Games, it was bundled with Team Fortress Classic,Opposing Force multiplayer, and the Wanted, Half-Life: Absolute Redemption and Firearms mods."

On March 24, 1999, Planet Half-Life opened its Counter-Strike section. Within two weeks, the site had received 10,000 hits. On June 19, 1999, the first public beta of Counter-Strike was released, followed by numerous further "beta" releases. On April 12, 2000, Valve  announced that the Counter-Strike developers and Valve had teamed up.

The non-beta public release dates of Counter-Strike are as follows:

• Version 1.0: November 1, 2000
• Version 1.1: March 13, 2001
• Version 1.3: September 12, 2001
• Version 1.4: April 24, 2002
• Version 1.5: June 12, 2002
• Version 1.6: September 12, 2003

Counter-Strike: Source

Counter-Strike received a major technology update and refresh on November 1, 2004 with the release of Counter-Strike: Source, which was heavily updated using Valve\'s Source game engine to take advantage of more modern graphics and audio hardware. However, the original Counter-Strike is still available and played by many people via Steam, as the two variants are quite different, and players inevitably prefer one variant over the other. Both versions continue to co-exist today.

Counter-Strike was originally played online through the WON gaming service, which was shut down in 2004, forcing players to switch to Steam. The non-Steam version of Counter-Strike (version 1.5) can still be downloaded from sites such as FilePlanet. Due to the closure of WON, part of the player community responded by creating their own WON network, dubbed WON2.

In March 2007, Valve implemented mandatory advertisements through Steam in official maps and in the game\'s GUI overhead. Customers have expressed frustration with the ads, including an over 200 page thread on Valve\'s official forums, saying that they violate original terms of service and distract from the game. The thread was later deleted by an unknown moderator

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Counter-Strike Online

Counter-Strike Online is available in South Korea, Taiwan, Japan, Singapore, and Indonesia, and is now fully online. It is developed by Nexon Corporation with oversight from license-holder Valve Corporation, and is an attempt to increase market share of Valve\'s games in the Asian gaming market.

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Counter strike Global Efensive

On August 12, 2011, it was confirmed that a new Counter Strike game is currently in development at Valve Software and Hidden Path Entertainment, which also codevelops Counter-Strike: Source, going under the title Global Offensive. The game is played on game consoles (such as PS3, Xbox 360, etc.) and PC as well as Mac OSX and is aimed as a competition to other FPS games such as the Call of Duty and the Battlefield series. The closed beta testing is out on November 30, 2011, only for those who got the keys in "Penny Arcade Expo" and Eurogamer. It will be opened once Valve thinks that the server is ready.

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Controversy