A whole world from one number

There is no model file here and no scenery to load. Every hill, beach and tree is worked out from a single seed the moment the page opens — change the number and you get a different island, the same one every time you come back to it. Drag to look around.

The shape comes from layered simplex noise pushed through a radial falloff — that falloff is the only reason it's an island instead of endless hills. Colour is decided per triangle by how high it sits, which is what gives the facets their edges.