PoppyAppletree: Looks interesting, and I've wishlisted it. Not sure it's quite what I'm going for though - does it feature in-depth town-building mechanics?
No. It's a 2.5X, essentially. Town building is limited to ten slots, fifteen building types, and depending on your game settings, you can be allowed to build more than one of each type of building.
Thea is about the combat and exploration. It's about expanding your options by improving your village potential, and levelling up your villagers. It's also about gathering and crafting. But there's essentially no settlement building. It's very good for what it is but it's not what you're asking about in this thread.