A building sim that's as relaxing as it is challenging, Terra Nil has a truly wonderful idea and I absolute love following it along in development with a new big update out now.
In Terra Nil, you're tasked with turning a barren wasteland into an ecological paradise complete with different flora and fauna, then clean up after yourself to leave the environment pristine. Quite clever mechanically, giving you a certain percentage you need to hit on each map with your greenery. Originally it just gave you random maps to play through but now the progress is evolving.
As for Terra Nil 0.4, it gives you a whole continent to restore with different biomes across the areas you're trying to restore. When you do complete a level, the menu map then covers that area in greenery and it's actually quite slick.
The update also adjusts the difficulty to be more generous with the curve, there's lots of little tweaks and fixes all over to. Now, it's really starting to feel like a full and proper game. It was already good before but now it feels a little more complete and if you've not tried it yet you should try it.
Starting off with nothing you need to work out power then split a few building across the map like water pumps, toxin scrubbers and all sorts while you then use greenhouses and other buildings to spread lush greenery across the level to build up your reclamation level to eventually hit the percentage it needs to complete.
Find it free on itch.io. Absolutely wonderful game.