Despite the fact that most of us still dont have an HMD (head-mounted display) like the Oculus Rift, Valve is embracing VR gaming wholeheartedly. Its latest SteamBeta now has a virtual reality mode right in the view menu, negating any of the last betas command line futzing. Assuming you have the SteamVR beta installed and an HMD plugged in, you can now switch quickly between the desktop and VR or Big Picture modes.