Virtual world

Based on the computer simulated environment, a virtual world is designed for its users to inhabit and interact through avatars. There are three stable ways of avatars: textual, two-dimensional and three-dimensional graphical. Certainly, other forms are allowed to use but not too often.
Most of the virtual world has an original model rule in the real word. Embellished by colorful fantasy, the virtual world looks more wonderful than the real world. You can have a chat between users via visual gesture, sound, and text but rarely use touch, voice command and some other ways. Some but not all virtual worlds allow for multiple users. Another key point is virtual worlds are not limited to games only.