At this point, I have assumed that you have Unity started up and have our project from the previous chapter loaded. Now, perform the following step:
With Unity started, open the project from the previous chapter and if you are on our previous level, create a new scene by selecting File | New Scene.
As a level designer, one of the most time-consuming parts of your job will be creating environments. There are many different ways out there to create levels. By default, Unity gives us some default meshes, such as a Box, Sphere, and Cylinder, and while it's technically possible to build a level in that way, it could get really tedious really quickly. Next, I'm going to quickly go through the most popular options to build levels for games made in Unity before we jump into building a level of our own.