Valve has announced that it is developing a way to play all of the Steam games in virtual reality. Not only the games that are developed for VR but also all the games that you have in your library. Now, it's officially out in beta form and if you have an Oculus Rift or Vive Pre, you can enjoy it. Valve states that with the new Desktop Game Theater support, any game that supports Steam Broadcast should work with , but for best experience you might have to fiddle with graphics settings on a per-game basis.
With the releasing of Rift on March 28th and the Vive in April, the Steam Desktop Game Theater Beta essentially credits to the biggest game platform prepping the runway.