Your smartphone-based VR has another trick.
There's already a lot you can experience with Google Cardboard. Quick horror experiences to make your friends jump, exciting trips on roller coaster you may never go on yourself, and concerts to watch as though you're in the audience top a surprisingly long list of possibilities. There are hundreds of Google Cardboard apps available for anyone to try, but if you're looking for something to try that is just a step above your average app the folks behind VRidge want you to see what desktop-class VR is like without relying on Oculus or Valve for anything.