Source (Half-Life 2 Engine) - 2004

Source Engine is a game engine developed by Valve Software, first used in the 2004 first-person shooter game Half-Life 2.
goldsrc
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Source (Half-Life 2 Engine)
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DMC:R -
Half-Life: Rally - 1998
Marvel vs. Capcom 2 - 2000
Ricochet - 2000
Counter-Strike: Xbox - 2003
Counter-Strike: Source - 2004
Half-Life 2 - 2004
Classic Fortress 2 - 2007
Fortress Forever - 2007
Portal - 2007
and 12 more...
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Source 2 (Half-Life: Alyx Engine) (2015)