I am not sure if it fits your bill, but when I am overwhelmed by my factorio mega base or tired of traffic in cities skyline I now switch to the recently released Sintopia. It scratches the build-optimising itch, but does so in rounds with a clear goal and a defined end. You can go endless and sandbox if you wish but I find it at the moment relaxing to know that after maximal 10 ish hours of avoiding the goal I can finish the run anytime and do a new one. And don’t actually have to fix everything.
I am not sure if it fits your bill, but when I am overwhelmed by my factorio mega base or tired of traffic in cities skyline I now switch to the recently released Sintopia. It scratches the build-optimising itch, but does so in rounds with a clear goal and a defined end. You can go endless and sandbox if you wish but I find it at the moment relaxing to know that after maximal 10 ish hours of avoiding the goal I can finish the run anytime and do a new one. And don’t actually have to fix everything.