De eerste episode van de aankomende Half-Life 2 uitbreiding moet nog gaan verschijnen en Valve zou al bezig zijn met het 2e deel. Robin Walker zou dit aan de website van Computer and Videogames verteld hebben. Walker zegt verder dat de expansion ongeveer 4 tot 6 uur aan speelplezier zou gaan bieden. Dit is vrij weinig in vergelijking met de originele versie, minder dus dan de fans gehoopt hadden.
Valve’s Robin Walker, designer/engineer on Episode 1, informed us that Episode 2 “has been in development for some time” in an interview that’ll be winging its way to you shortly. Although he didn’t elaborate further, it sounds as though Episode 2 may appear sooner than we could have hoped. We’re definitely keeping trigger fingers crossed on that one, especially as the developer has aimed to offer “between 4 to 6 hours” of gameplay time with Episode 1, according to Walker – shorter, perhaps, than fans might have expected.