Detail this asset from Unity Store: Original Link
This is a paid asset, but now you can download Island Terrain Pack Free.
Island Terrain Pack v1
“If possible, please buy the package to support the developer”
The island terrain pack consists of 29 textured unique islands in numerous different styles.
• Islands (Normal) – These are grassy and rocky 5 islands following a generic island layout
• Islands (Rocky) – These are 5 grassy and rocky islands featuring terraced levels
• Islands (High) – These are 3 grassy and rocky terraced islands with a high cliff faces
• Islands (Low) – These are 3 grassy and rocky terraced islands with low cliff/terraces
• Islands (Sandy and Rocky) – These are 5 sandy (dune like) islands with rock outcrops
• Islands (Sandy) – These are 5 sandy islands similar to dunes or sandbars
• Islands (Epic) – These are 3 large scale (4096×4096) islands in the same vein as the normal islands.
• 16 bit raw files included for every island
The pack includes scene files for every island, with each island textured accordingly and ready for customisation with things like grasses, trees and other objects.
Check out the Pocket Playground website for a Web Player island demo.