Half-Life 2’s Excellent PC VR Mod Is Almost Too Good To Be True

As of last week, a long-held dream of playing Valve’s landmark 2004 shooter Half-Life 2 in virtual reality has finally come to fruition. The journey began nearly 10 years ago, when a man named Nathan Andrews managed to hack together a functioning version of the all-time classic in VR. This was before any Vives, Indexes, Quests, or Oculi. With a primitive Sony HMZ-T1 and specialized motion-tracking gear, Andrews risked a resonance cascade scenario to splice together a working foundation for a full Half-Life 2 VR mod. Over the next decade, dozens of volunteers would contribute to the off-then-on-again project, all in hopes of one day bashing enemies with a crowbar in semi-lifelike virtual reality.

And now Half Life 2: VR Mod is ready to play, thanks to the hard work of the Source VR Mod Team and their free, open beta available on Steam. There’s more work to be done for sure—a public roadmap shows what’s to come—but the entire main campaign is already up and running, and pretty surreal to experience. Sharp corners and all, Half-Life 2: VR Mod is well worth checking out right now if you can.

The differences are quite immediate. The G-Man’s opening scene grants a whole other sense of scale since you have active depth perception. Images flash and appear inside of him as fully realized 3D spaces, which you can actually peer inside of and see with greater depth and dimension. This new presentation grants more weight to the whole scene.

As a video game graphics experience in VR, it’s super cool. Your eyes can track flying debris and exploding barrels with the ease and speed of just turning your head. The violence and realistic physics of Half-Life 2 are no longer just simulations appearing on a screen in front of you; they’re happening in a 3D space you feel a sense of presence and dimension in. It all feels so natural that it’s easy to forget this is the end result of a decade of hacked tech created by enthusiastic fans.

And while there’s still more work to be done on the weapons, it is a thrill to be able to virtually hold, examine, and fight with these classic video game armaments. Smashing the aggressive, flying manhacks with a crowbar in VR is so obscenely fun that I want a mini spin-off mod of this alone. And my Fitbit tells me I’m earning “Zone Minutes” by whacking these things. The 9mm pistol feels fun to aim and shoot (and yes, I am only aiming with one hand). More modern VR games tend to have smoother reload mechanics, so this mod’s feel a bit clunky sometimes, but the action remains just as hectic and fun.

In a way it feels like Half-Life 2 was always supposed to be this way. It is very easy to lose yourself in this mod, both as a VR experience and a Half-Life one. It easily pushes past the status of “tech demo” or “mod,” feeling like it’s shaping up to be a solid VR game in its own right.

The Half-Life 2: VR Mod project is currently being worked on by users from the Flatscreen to VR Discord server, led by WormSlayer, whose involvement goes back to the earliest days of the project. Back then, WormSlayer caught sight of Andrews’ early prototypes and offered his talents, starting with work on the gun models.

WormSlayer’s description of the mod’s early days sounds like something you’d need to slap together to survive City 17 itself. The assemblage of tech included a “Sony head-mounted TV, a gun controller for a console, and a professional 3D tracking system [Andrews] had access to,” WormSlayer told Kotaku. That headset in question was the Sony HMZ-T1, which sported “an eye-watering resolution of 640×720 per eye, and a 45-degree field of view,” WormSlayer said. That headset would be left behind in favor of the Oculus DK1, the first hardware the just-incorporated Oculus (now Meta) ever released. You can see footage from those early days in a 2013 YouTube video.

As such an early consumer VR experiment, the project was destined for some roadbumps as new tech hit the scene, quickly aging out existing standards. “Valve and Oculus both abandoned the idea of treating a VR headset as just another monitor,” WormSlayer said. “This was a sound idea for many reasons, but it effectively broke VR support in Half-Life 2.”

After that switch up, the team gave up for a while. Andrews retired from the project entirely. Eager VR community members, however, persuaded WormSlayer to reconsider dropping it all together. “[They] were confident they could hack OpenVR support into the old project,” WormSlayer said. And so the project sparked to life again, making great progress before once again resuming its slumber as essential contributors moved on.

Thankfully, the nascent Half-Life 2: VR Mod would indeed see a second resurgence when the Flatscreen to VR community mustered up a new team. Now that the public beta is out and…