In this chapter, we approached the topic of virtual reality from a fundamental level. The HMD is the crux of modern VR simulation, and it uses motion tracking components as well as peripherals such as the constellation system to create immersive experiences that transport the player into a virtual world.
Now that we've covered the hardware, development techniques, and use cases of virtual reality---particularly the Oculus Rift---you're probably beginning to think about what you'd like to create in virtual reality yourself. In the next chapter, we'll be diving into implementations using the Unity3D engine, and you'll take your first step into VR development.