By Alejandro Romero
Polybrush is a Unity extension that allows for sculpting, painting, blending, and scattering objects in the Unity editor.
https://unity3d.com/unity/features/worldbuilding/polybrush
Sculpt meshes in editor
Blend colors and textures
Paint vertex colors
Scatter objects in game world with brushes
Works great with
Open Unity. If you do not have Unity installed, see the Unity3D wiki page
Go to Window > Package Manager and make sure All-packages is selected in the dropdown in the top left of the Package Manager window
Simply look up Polybrush and hit install on the bottom right
In the Editor, go to Tools > ProGrids > Polybrush Window
This will open the Polybrush window! Its functionality is outlined in the main Features section above