According to the rumor mill, Half-Life: Alyx will be a VR-only game set for a March 2020 launch. It's reportedly designed for the Oculus Rift, HTC Vive, Windowed Mixed Reality, and Valve Index headsets. Half-Life: Alyx is a prequel set years before Half-Life 2 and will feature Alyx as the main character.
It will be interesting to see if Valve can create something unique here that will drive the adoption of VR headsets. This generation of virtual reality has been around since 2016 but so far we're not seeing a lot of evidence of a major VR boom.
We’re excited to unveil Half-Life: Alyx, our flagship VR game, this Thursday at 10am Pacific Time.
— Valve (@valvesoftware) 18 november 2019
Can’t wait to share it with all of you! pic.twitter.com/BupFCxSrTw