This work is developed using the Unity3d game engine and includes:

(1) The use of Unity3d terrain systems, physical systems to create the environment.

(2) Use Maya to create objects such as buildings.

(3) Baking the game terrain and adding a third-person controller.

(4) the use of C# script to achieve the movement of the third person controller, observation behavior, scene roaming

(5) Platform release, set up support for virtual reality equipment, use VR display to observe roaming scenes