Not quite what you’re looking for, but I think you might enjoy Worldbox for a nice and relaxed, long-term game! It’s a fun god game with the twist that the inhabitants of your worlds are alive and doing their own thing, be that farming, building cities and kingdoms, forming empires, or making alliances and waging wars all without your input (although you can meddle in the affairs of the world as much as you wish). It’s free (with a single $7 premium purchase if you love the game and want to support the dev).