Vanilla factorio comes with two map generators: Normal and Island.
Normal maps that we all know and love:
But one can now also select an Island map. This will generate single large island surrounded by only water. If you run out of resources on the island then you will be stuck on the planet never being able to start a rocket.
But one can do so much more with the map generator. For example I just managed to generate maps with many islands that I hope to add to the cargo-ship mod to better utilize the cargo ships. Resources still need to be increased as most land in water now. Here is how it looks so far (one with slope shading because that lets one judge the elevation better):
Have any of you played around with the map generators or know mods that generate other fancy maps please post some screenshots and descriptions.