It feels like every six months or so, we get a new wrinkle in the seemingly endless wait for confirmation that Half-Life 3 even exists. There might be more meat on the bone this time, however, as a Valve developer has directly mentioned something called “HLX,” an acronym we’ve not heard from the company until now.
Speaking at GameSoundCon 2026 in Burbank, California, as reported by VGC, Valve music designer Mike Moraskey detailed how the company implements audio in a talk. In a specific section about HDR, Moraskey says,
“In fact, Deadlock has its own version of HDR, HLX has its own version, and so on and so forth.”
You can also see a video of the moment below, posted by @gabefollower on X.
Rumors of Half-Life 3’s production have been circulating the internet for years, for nearly a decade. The most substantial rumor was back in May 2025, when a notable Valve insider claimed that Half-Life 3 was being playtested internally at the company. Interestingly, at that time, there were a few key words discovered through a new method to check the names of hidden groups in Valve’s internal system; those keywords were hlx, hlxaudio, and hlxartists.
But this is the first time we’ve ever seen Valve “officially” use the HLX acronym publicly. The last Half-Life game released was the VR title Half-Life: Alyx in 2020, where players take on the role of Alyx Vance between the events of the first and second game. Realistically, you can see how the HLX acronym could somehow apply to Half-Life: Alyx, but again, it’d be strange for Valve to only start using it right now after four years.
If Half-Life 3 actually does exist, it’s anyone’s guess how long it could take to hear or see anything about it. Even Deadlock still hasn’t been officially announced, and is only accessible with an invitation from a current player.
We haven’t seen any Half-Life activity out of Valve since the series’ 25th anniversary in 2023. At that time, the company released new multiplayer maps, restored cut content, added graphics options, Steam Deck compatibility, and even created an hour-long documentary about the development of the original game. The 25th anniversary site is still live, where you can see more details on all of that.
