Factorio Forums

Map seed, 3340594424, Terrain water coverage scale 50%, coverage 200%.

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This produces a small Island, all resources apart from uranium on the Island, and no enemies on that Island.
A small amount of uranium is on a small island to the bottom left, but you will have to kill the spitter on a third island.
Increasing the uranium frequency to 300% will give a small patch of uranium on the main island.

Increasing the Fulgora Island scale and coverage to max gives a nice little drone accessible island, towards the bottom right.

I like island maps, but I find that it makes later expansion very difficult. Many resource patches end up covered by water so you have to venture deep into biter territory to get more resources later in the game.