Start a new project then, and make sure you’ve selected “3D” under Template. (Unity used to be referred to as Unity 3D, but these days it is just as popular for 2D development.) ...

Unity is the world’s leading platform for creating and operating real-time 3D (RT3D) content. Creators, ranging from game developers to artists, architects, automotive designers, filmmakers, and ...

That "Unity look" is the result of so many new developers using the same Unity Engine default materials, assets, lighting effects, and shaders in their games.