Watch Half-Life: Alyx.

 The war against the Combine starts In between the events of Half-Life and Half-Life 2, Alyx Vance and her father Eli launch an early challenge against the ruthless invasion of Earth by the Combine.
There is already a fresh defeat in the Seven-Hour Fight.

You are Alyx Vance and you have been heading to the region of 17 for a change. Over the years, you have been doing your underground work — critical work and the development of useful instruments for the few courageous enough to protect the mix.

A full-length game built from the ground up to virtual reality Lean around a shattered wall and under a barn to create an unlikely target. Rummage around the racks to locate a curing syringe and a few shotgun rounds. Manipulate software to figure out foreign interfaces.

Play on every SteamVR device If you have VR hardware that fits with a machine, it fits with SteamVR.
If you don't own any VR hardware yet, it's time. Headsets have specific collection of apps, and the experience can vary between them.