for some reasons you don't want to use additional application / software for modeling or complex terrain scene in unity then here is your solution ,,,,,,,,,,,Unity provides a modeling tool which is called Pro-builder. And you can get in unity in very simple way.
If you want more details about Pro-builder then comment below , i will give you whole detail about Pro-builder................thank you for your time guys ........
(#SHORTS)
tags: #unity #unity3d #modeling # game