Virtual reality (VR) is the name coined for any system that aims to allow a user to feel as if they're experiencing a particular experience through the use of special perception-changing tools. In other words, VR is an illusion of reality, one that exists inside a virtual, software-based world.

When connected to a VR system, the user might be able to move their head around in a full 360 motion to see all around them. Some VR environments use handheld tools and special floors that can make the user feel as if they can walk around and interact with virtual objects.