Asset packages are a handy way of sharing and re-using Unity projects and collections of assets. However, you can also use the asset package A collection of files and data from Unity projects, or elements of projects, which are compressed and stored in one file, similar to Zip files, with the. More info See in Glossary, samples, tools, or other assets, Unity recommends creating your own Unity package. In each Scene, you place your environments, obstacles, and decorations, essentially designing and building your game in pieces. Think of each unique Scene file as a unique level.
Note: If you want to share scenes A Scene contains the environments and menus of your game.