These steps provide a general overview of the basic principles of working with Assets in Unity.
An Asset is a representation of any item you can use in your game or Project. An Asset may come from a file created outside of Unity, such as a 3D Model, an audio file, an image, or any of the other file types that Unity supports. There are also some Asset types that you can create in Unity, such as a ProBuilder MeshThe main graphics primitive of Unity. Meshes make up a large part of your 3D worlds. Unity supports triangulated or Quadrangulated polygon meshes. Nurbs, Nurms, Subdiv surfaces must be converted to polygons. More info See in Glossary, an Animator ControllerControls animation through Animation Layers with Animation State Machines and Animation Blend Trees, controlled by Animation Parameters. The same Animator Controller can be referenced by multiple models with Animator components. More info See in Glossary, an Audio Mixer, or a Render TextureA special type of Texture that is created and updated at runtime. To use them, first create a new Render Texture and designate one of your Cameras to render into it. Then you can use the Render Texture in a Material just like a regular Texture. More info See in Glossary.
Some of the Asset types that you can import into Unity
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