Virtual Reality (VR) is a computer-generated, interactive, three-dimensional environment or simulation that can be experienced and interacted with by a user through specialized hardware and software. In virtual reality, users are immersed in a digital world that may mimic aspects of the real world or be entirely fantastical and fictional. 

To experience virtual reality, users typically wear a VR headset, which is a wearable device that covers their eyes and often their ears, blocking out the external world and replacing it with the virtual environment. The VR headset tracks the user’s head movements, allowing them to look around and interact with the virtual world as if they were physically present within it. 

Additionally, VR experiences can be enhanced by using motion controllers or other input devices, which enable users to manipulate objects, interact with the environment, and perform various actions within the virtual space.