Satisfactory, so many things to do. I'm still not done yet and have 300 hours in this one save. (About 900 hours in total). Great game, made by great people.
I know a guy who's 60+ who's playing the game because you can build however fast and slow as you want.
Embrace the spaghetti! It is always like that in the beginning and then when you have some resources you clean up as you expand. I have played it a fair bit and all the starting phases are a slight mess. My problem is I never space things out enough.