Valve Audio Designer Accidentally Confirms 'HLX' Project During GameSoundCon Panel

Key points

• During a GameSoundCon Q&A panel, Valve music designer Mike Morasky discussed HDR audio implementations across various titles.
• Morasky stated that while Deadlock has its own HDR setup, 'HLX has its own version,' before abruptly trailing off his sentence.
• Leak expert Tyler McVicker shared the clip, noting that a colleague, sound designer David Feise, whispered 'nice work' in response, likely sarcastically.
• The mention confirms that a project codenamed HLX is currently in development and requires distinct audio engineering.
• This incident follows years of data mining and leaks suggesting HLX is a standalone, non-VR Half-Life title.

Background

Speculation regarding a new Half-Life entry began in 2021 when dataminers identified references to 'HLX' in Valve files. In 2024, Tyler McVicker claimed the project was a fully-fledged, non-VR game nearing completion. In 2025, concept artist Evgeniy Evstratiy confirmed working in a room dedicated to the third installment, and McVicker later claimed the game was 'playable, end-to-end.' Despite these claims, no official announcement was made in late 2025, leading to a temporary decline in hype before this latest slip-up.

How outlets are covering it

Ars Technica frames the event as a major panic-inducing moment for fans, emphasizing the accidental nature of the reveal. 80 Level highlights the specific details of the slip, including the colleague's reaction, and provides a detailed timeline of previous leaks, including procedural mechanics and gravity anomalies. TechPowerUp notes that while the mention confirms the project's existence, it does not guarantee a release, citing Valve's history of abandoning projects like Half-Life 2: Episode 3. Eurogamer points out that Morasky's phrasing suggests HLX is a standalone project requiring music, but questions whether it is truly Half-Life 3 or a different title, noting the long wait since Half-Life 2: Episode 2.

Why it matters

The accidental confirmation by a Valve employee provides the strongest evidence yet that a new Half-Life game is in active development. It validates years of fan speculation and data mining, suggesting that the project is not merely a concept but a work in progress with specific technical requirements. This could lead to increased anticipation and potential leaks in the coming months, though a release date remains unknown.

What to watch

Fans and analysts will likely scrutinize future Valve communications and events for further slips or hints regarding HLX. Tyler McVicker and other dataminers may continue to dig for more evidence of the game's status. Valve may eventually address the project directly, though they have historically been secretive about unreleased titles. The community will also debate whether HLX is indeed Half-Life 3 or a different entry in the franchise, given the lack of official confirmation.