The scene is somewhat like the stage on which all the meshes are placed to be seen and the cameras and lights are placed that make them viewable. Of course there are more than meshes, cameras and lights that make a scene a good experience for your users, for example the user interface. Also there are special effects to be had to make the environment more realistic. Want to overlap two or more scenes that is possible as well.
Want to build a scene with the minimum of code then fast build is for you.
What else might you expect of your scene? You might expect to be able to
- have the scene react to clicks and touches;
- have your own design displayed when your scene is loading;
- optimise your scene to maintain a good speed;
- output images of particular views of your scene.