It was followed by two episodic sequels, Half-Life 2: Episode One and Half-Life 2: Episode Two, released on June 1, 2006, and October 10, 2007, respectively.
Sellele järgnes ka kaks episoodilist järge: "Half-Life 2: Episode One" ja "Half-Life 2: Episode Two", mis ilmusid 1. juunil 2006 ja 10. oktoobril 2007.