I just bought a Google Cardboard to tryout and it works surprisingly well. (on my Note 2, even better on my new Note 4 with four times the pixels and faster processor.)
The Ergonomics of the basic Cardboard model are horrible but there are better-designed plastic versions out there for $20! Bluetooth the phone to a game controller and you are set! (Which is only another $30)
Since Asylum is supposed to be released for tablets (Android?) then modifying the viewer for dual-vision should be easy. Asylum doesn’t even need to know about the head-tracking!
Maybe it can come later as a special release, but head-tracked stereo vision Asylum would be just plain righteous! Non-stereo may actually be more comfortable because 2D operations on Asylum’s imagery may not translate to stereo-depth at all.
(details: for practical gameplay you would probably only do local looking. To look behind you would require spinning the view with a control because frankly, I am not likely to want to sit in my chair and spin around in every direction just to see! But the fixed-position nature of pre-rendered pano point-n-clicks is a perfect match to todays VR because both allow you to physically look around, in stereo, but not physically slide away from the viewpoint)