Counter-Strike 1.3 , released on , is a significant historical version of the original Half-Life mod. While it is no longer officially supported by Valve or available for direct download via Steam, it can still be found through community preservation sites. Historical Significance of Version 1.3
Official WON servers were shut down in 2004. To play the online today, you need a master server replacement. Half Life Counter Strike Download 1.3 LINK