The book provides an overview of the virtual reality, along with various virtual reality systems. This book also explains the basic concepts of visual, acoustic, and haptic modality in virtual reality. It oulines the differences between Augmented Reality and Virtual Reality, with their benefits and applications. In addition to this, this book also highlights the importance of virutal reality in the coming future. Virtual reality (VR) is a computer-generated simulation in which people can easily interact within an artificial 3D environment. The development of virtual reality is intended to give people a realistic experience inside a virtual world, by making use of technologies that influence the human brain into believing whatever they are experiencing is real. Most commonly, virtual reality is used for entertainment purposes such as 3D cinema and video games. This book takes the readers through the brief introduction about virtual reality, focuses on history of virtual reality, types of virtual reality and its development, systems of VR, its comparison with augmented reality (AR), human beings in virtual environment (VE), benefits, and applications of VR along with its future.