ML Terraform is a Terrain Generator implemented using a Neural Network trained on handmade 3d models. It is now available as a Web Tool and Unity Plugin.

Let me know what you think.

2 hours ago, KarolinPfaff said:

Looks pretty good.. However, I'm getting quite confused when I try to think of a way to customize this ?

In Unity you can select the Unity Terrain option and modify it with their tools. For the Web Tool you can export and modify it with a 3D modeling software, such as, Blender.