Where to create maps for games (Unity3d)?

Question

3D

Good afternoon, what utility can be used to develop maps ( terrain ) for Unity3d?
The built-in map editor does not allow you to work out the terrain in detail.
Thank you.

Answer 1

There is such a wonderful thing for Unity https://www.youtube.com/watch?v=XqRax4xPy_M
It costs only $149 in the asset store https://www.assetstore.unity3d.com/en/#!/content/64132