Havendock
In Havendock, you will build a settlement in the middle of an ocean, which will serve as a peaceful asylum for other survivors. Unlike most city builders, in Havendock you play as one character - the solo inventor and community leader.
You start collecting driftwood and figuring out how to get drinkable water. Then you will have a farm allowing you to cook delicious meals for you and other settlers. But things escalate quickly. One day you might end up with a submarine exploring the ocean floor or a rock