This week is a big week for "unreal" reality. Microsoft has just started the pre-orders of its prohibitively expensive augmented reality HoloLens development edition headgear. HTC has also started the same for its Vive virtual reality headset. Google has put up a section on its Store for Cardboard goggles, including Mattel's new ViewMaster. And now, Razer is announcing the first games, all from Steam, that you will be able to play in virtual reality mode on any Open Source Virtual Reality development kit that you may have.