Hills typically aren't just grass, vegetation can be used to block player's visibility as well as give a better look for our environment:
- With that finished, go back to our Terrain object and then click on the Place Trees mode button (the one that looks like two trees).
To check the names of each button, you can hold the mouse over the image for a second before it'll display what it is.
- Just like working with painting textures. There are no trees by default, so click on Edit Trees… | Add Tree.
- From the window that pops up, set the Tree Prefab by going to the Project tab and then going to
Standard Assets\Environment\SpeedTree\Broadleaf and select Broadleaf_Desktop and then Add.
- Next, under Settings, change Tree Density to
15 and then ...