The Half-Life series contains examples of: Later iterations of the series (starting with Condition Zero, and continued with the standalone release of Counter-Strike: Source a year after it was released bundled with Half-Life 2) were sold standalone and the series as a whole went a separate way from Half-Life, with the first game remaining the only solid connection (it and its remake are still sold as part of Half-Life bundles on Steam, unlike the later Counter-Strike games).įinally, Portal is a side story to the series, more directly set in the same universe, whose plot has evolved almost completely separately given that it takes place entirely inside the Aperture Science complex, established in-game as a rival to the Black Mesa Research Facility. It was originally billed as part of the Half-Life series (and implicitly in the same universe due to shared assets like Black Mesa scientists and containers), with the 1.6 version of the mod being officially named Half-Life: Counter-Strike when sold at retail, and its remake, Counter-Strike: Source being bundled with every retail copy of Half-Life 2, as well as, initially, every digital copy. In addition, there's Counter-Strike, which started out as a mod of the first Half-Life.

Half-Life: Alyx * VR prequel to Half-Life 2 (2020).

The games composing the series are the following:

Half life tau cannon