Unity terrain is essentially the ground in your game environment; it is your landscape. Unity has several tools that we can use to create, shape, and customize the terrain. We will use those tools later in this chapter.
For our game, we will use a terrain that was created from a height map and then edited in Photoshop. If you are interested in learning how to accomplish this, read the Importing the terrain section. Otherwise, you can skip this brief section and resume with the section on importing the terrain.