Valve has released a little guide to Half-Life: Alyx's unique spectator mode is a way to turn the game's VR output into something understandable to those watching on a regular screen. There's also a frankly brilliant gameplay gif of Alyx bumping up the head club with a chair. This is the strongest answer to the question "Why is this game in VR? This is the strongest answer to the question, "Why is this game in VR? The spectator mode is useful for both streamers and in-person spectators.

How to use spectator mode" To turn on spectator mode in Half-Life: To turn on spectator mode in Alyx, open Settings > Spectator from the game menu. There you can turn on the second screen Spectator HUD, adjust its relative size, and enable camera smoothing. You can also set it to your dominant eye so that you can see the player pointing down the sights of his weapon. There is also in-camera smoothing that can be used to tweak the game's HUD or to capture in-game footage, such as Valve's trailer; Valve's Half-Life guide is here: Alyx's spectator mode is here.

Half-Life: Alyx will be released on March 23; everything you need to know about Half-Life: Alyx is here: about Alyx.