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A Valve developer, sound designer Mike Morasky, appeared to slip up and mention the long-rumored Half-Life 3 codename 'HLX' while discussing HDR audio systems at Game Sound Con on October 22, 2026, reigniting speculation that Valve has finally confirmed the sequel's existence. The remark, made alongside references to Valve's upcoming game Deadlock, spread quickly online as fans and outlets pointed to it as the clearest sign yet that Half-Life 3 is real, following years of rumors and cryptic hints from the studio.