Frostpunk! That game is sooo good. One of my top games. Took me a sec to get into the first time I played it and then didn’t touch it for a long time. I went back and played it again and got sucked into it. I have hundreds of hours in it now. Love it so much I even got the boardgame.
Check out thier other game, “This war of mine” if you haven’t already. It’s a 2D survival game.