The 3D Internet (3DI) is the set of 3D virtual and mixed reality worlds in the Internet. Here, users can experience, use and share with others for various applications. The Internet world as the authors knows it today has undergone far-reaching changes since its early days while becoming a critical communications underpinning their economic performance and social welfare. The 3D Internet is poised to replace the 2D Internet as they know it today. This paper takes a look at the two types of Internet, advantages and disadvantages and the future of the present Internet as they know it.