https://wccftech.com/valve-seemingly-leaves-the-door-open-for-half-life-alyx-on-psvr/

Valve caused quite the stir across the games industry when it finally unveiled Half-Life: Alyx, another game in the revered first-person shooter franchise. Due to release in March 2020 via Steam, Half-Life: Alyx has been confirmed to compatible with all major Virtual Reality headsets in the PC space, from Valve's own Index to the Oculus Rift, from the HTC Vive to Windows Mixed reality headsets. This caused a spike in the interest of all these VR devices, which worked well in conjunction with the Black Friday and Cyber Monday week.

That said, there is another major VR platform that exists outside the PC space. We're of course referring to Sony's PlayStation VR, launched for the PlayStation 4 console in October 2016. PSVR is, in fact, the best-selling high-end VR headset so far with over 4.2 million units sold as of March 2019.