Gamers who have been waiting for a true sequel to Half‑Life 2 for many years may recall the surge of speculation last year that Half‑Life 3 was finally close to completion. Despite the rumors, no official confirmation ever came from anyone inside Valve that a new Half‑Life title was in development—until this week.
During a panel at GameSoundCon, an industry conference focused on the art, technology, and business of game audio, Valve composer and audio artist Mike Morasky unintentionally let a three‑letter code slip while discussing the company’s high dynamic range (HDR) audio system. In the recorded session, Morasky said:
“Our HDR system is basically that’s one of the three pieces that come together to make an HDR that you can easily optimize. And in fact, I think Deadlock has their own version of HDR. HLX has its own version, so on and so forth.”
The acronym “HLX” has been widely reported as the internal codename for Valve’s upcoming Half‑Life project. The name has appeared in Valve’s engine code since at least 2024, but this is the first time a Valve employee has mentioned it publicly, aside from a near‑miss in an interview Morasky gave last year. The slip has reignited hopes among fans that a new Half‑Life installment may finally be on the horizon.