Valve Accidentally Confirms Half-Life 3? HLX Mention Sparks Rumors
Credit: Valve
Valve may have just given Half-Life fans their biggest clue yet. A developer’s unexpected mention of the mysterious codename “HLX” during a public presentation has reignited speculation about the long-rumored Half-Life 3.
The incident took place at GameSoundCon 2026, where Valve composer and sound designer Mike Morasky discussed the company’s approach to audio technology. While explaining how different games use their own implementations of Valve’s HDR audio system, Morasky mentioned both Deadlock and HLX.
The comment immediately caught the attention of fans familiar with years of Half-Life 3 rumors. Fellow developer David Feise appeared to react with a sarcastic “Nice work,” later joking that Morasky had only mentioned HLX once.
What Is HLX, and Why Does It Matte...



