Against The Storm provided some of the most fun I had playing a citybuilder last year. That was in part because, despite being set in a dark fantasy world in which you must satisfy an unyielding Queen, and despite being in early access, it's remarkably graspable. It's the kind of citybuilder where, if you place a building in the wrong place, it simply lets you pick it up and move it at no cost.
As of its latest update, there's now a new customisable game mode that lets you make your expeditions even more relaxed - or much harder.