General settings

The General settings include basic information you need to create a new Terrain, such as Terrain width, length, height, and number of tiles.

Property	Description
Terrain Width	The total width of the Terrain (in meters along the X axis).
Terrain Length	The total length of the Terrain (in meters along the Z axis).
Terrain Height	The height of the Terrain (in meters along the Y axis).
Start Position	The start position of the first tile (X, Y, Z).
Tiles X Axis	The number of tiles along the X axis.
Tiles Z Axis	The number of tiles along the Z axis.

Group Settings

Group Settings let you apply the same settings to new Terrain tiles in a group. Often, a group of Terrain tiles share the same Grouping ID, heightmap resolution, and Material.

Property	Description
Grouping ID	The grouping ID for the new Terrain tiles.
Pixel Error	The accuracy of the mapping between Terrain maps (such as height maps and textures) and generated Terrain. Higher values indicate lower accuracy, but with lower rendering overhead.
Base Map Distance	The maximum distance at which Unity displays Terrain textures at full resolution. Beyond this distance, the system uses a lower resolution composite image for efficiency.
Draw Instanced	Check this box to enable instanced rendering, where Unity uses GPU instancing to calculate Terrain data on the GPU and efficiently render the Terrain mesh.
Material Override	A custom Material to render the Terrain with. Specify None to use the default material.
Tile Height Resolution	The pixel resolution of the Terrain’s heightmap, also known as Heightmap Resolution.