What feature indicates that an object is a prefab in Unity?

In Unity, a prefab is represented by a specific icon in the Project Window, which is a visual cue that helps users identify assets that are prefabricated. This icon typically resembles a small cube with a grid or other identifiable design, distinguishing it from other asset types like materials or scripts. Prefabs are essential in Unity because they allow developers to create reusable game objects that can be instantiated multiple times throughout a project while maintaining a consistent structure and behavior.

The visual differentiation that the prefab icon provides enables artists and developers to quickly locate and utilize prefabs within their projects. This is crucial for efficient workflow, especially in larger projects with numerous assets. Consequently, having this unique icon is a defining feature of prefabs, highlighting their status as reusable components in the development environment.