Terrain detail is handled in a similar way, allowing you to automatically add grass and small plants to your environment based on customisable surface based rules.

Detail meshes can be made for you from a texture using a simple quad mesh, which are called billboards. However, you can also add custom low poly meshes as detail objects.

You have the option of adding detail meshes that react to the wind, or static detail meshes such as rocks.

This gives you the flexibility to have farmland full of crops, while having a forest full of bushes, and a beach littered with pebbles.

Some Unity terrain settings pertaining to detail rendering, such as rendering distance, are also exposed on the Detail panel, which is useful for making global changes across all your terrains at once.

CityGen3D is packaged with a small selection of trees that can be procedurally added to your scene. You can also customise your scene with your own tree models.

Individually mapped trees from OpenStreetMap can be placed into your environment with the Trees module.

Distributing trees randomly across different surface types is also possible, allowing you to fill your forests and jungles with appropriate foliage.

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CityGen3D is a Unity Editor extension and is distributed with a small selection of 3D models and textures to demo the features of the tool.

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