Uses Valve's Source engine that was developed with Half-Life 2.
The first video game about Source was released on May 7, 2004.
Parent groupsC++ programming language, Game engines
|A||2004 - First Source game|
|B||2006 - Source 2006 (Episode One) branch|
|C||2007 - Source 2007 (Orange Box) branch|
|D||2009 - Source 2009 (Orange Box) branch|