The book "Design of a Three Dimensional Virtual Reality Environment" offers a comprehensive analysis and development of a three-dimensional virtual reality simulation environment. It addresses the interaction between two user-controlled soldiers and nine computer-controlled enemy soldiers, each guarding specific points in the virtual space. The simulation dynamically responds to the actions of the users and the enemy soldiers, resulting in an exciting and challenging experience. The book describes the technical implementation, including the software architecture, which consists of client and server versions, as well as the input devices used such as mouse, keyboard, Wii Remote, and GPS. Additionally, the design and animation processes of the 3D objects are detailed, utilizing programs like 3D Studio Max and Milkshape 3D. The programming was done in Microsoft C# using the Microsoft XNA graphics library, highlighting the technical depth and complexity of the project.