Download Terrain Spam FREE Unity. 

Terrain Spam allows level designers and developers create high volume and complex scenes with large amounts of objects in a much shorter amount of time.

– Optionally preserve prefab connections
– Select gameobjects to choose randomly from
– Automatically apply random or defined position, rotation, and scale
– Optionally snap to grid or intervals
– Auto assign a parent to created objects
– Layer masks for unwanted terrains