VR GunDefense The VR GunDefense been released. 'Gear VR' experience of VR or virtual reality using 'Google cardboard' a. After running the application Experience a virtual reality through the cardboard. Please defeating the dreaded zombie raising your score ? Google cardboard, etc. VR gear you need tools that make the normal content to enjoy the virtual reality experience. ? You can split the screen darkening, depending on the type and brightness of the display of the device.