Virtual Reality is an immersive and interactive artificial environment
which is experienced through sensory stimuli (such as sights and sounds).
It is provided by a computer or a mobile through a headset
and one's actions partially determine what happens in the environment.
For more information and history, check Wikipedia.
vr apps are developed to use with the Google Cardboard Headset.
The Google Cardboard Headset is no longer sold by Google since they abandoned VR in March 2021.
It can be purchased on Amazon or at stores such as Walmart and Target.