There's the embryo of a very good game, but it's not quite there yet.
You're walking on those randomly generated islands, and sometimes you find interesting sceneries (a forest of monoliths under the rain, a pink islet under a giant crescent sun,...), but it quickly becomes samey. Photography is simple and nice, tilting manually the camera to get into portrait mode feels kinda awkward though.
And... That's it. It's cute and relaxing but there's nothing more to it.