A Valve developer has publicly mentioned “HLX,” the codename widely associated with the company’s next Half-Life project, apparently for the first time. During a GameSoundCon panel about Valve’s use of open audio engines, composer and sound artist Mike Morasky explained that different games use their own versions of the company’s high dynamic range audio system, naming Deadlock and then saying that HLX has its own version too. Fellow Valve sound designer David Feise seemed to react with a sarcastic “nice work,” then joked after the session that Morasky had said HLX only once. The comment is a notable signal that a Half-Life project exists, but it reveals nothing about its title, features, or release date.
The codename has appeared in Valve engine code since at least 2024, while the last Half-Life release was Half-Life: Alyx in 2020. Previous predictions that Half-Life 3 was nearing completion have repeatedly failed to produce an announcement: a claim that it would launch alongside the Steam Machine was contradicted when that launch passed without news. Longtime Valve watcher Tyler McVicker, who had expected a 2026 announcement, now doubts one will happen this year, though he points to a recent rise in publicly observable Valve code commits as a possible sign of significant activity. The accidental name-drop fuels hopes of a series continuation, but provides no confirmation of when Valve will make it official.
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