VRC World Prefabs are pre-built VRChat worlds that creators can use as a starting point for their own creations. These prefabs are provided by VRChat and include a variety of different types of worlds, such as nightclubs, fantasy landscapes, and sci-fi environments. They are designed to be easy to use and customize, allowing creators to modify and add their own elements to the world to create a unique experience. VRC World Prefabs can be a useful tool for VRChat creators who are looking to save time and get started with a pre-built world that can be modified to fit their needs. Additionally, they can be a valuable resource for VRChat users who are looking for new and interesting worlds to explore within the platform.