A proper gregtech (4/5) successor. Everyone finds that factorio scratches their industrial engineering itch. I still yearn for 3D routing and exponential density improvements. By using basic combinational and sequential logic and clever 3D layouts you could really capture a lot of space and material efficiency. That kind of gameplay is totally missing from factorio. The other 3D industrial games don't seem to quite nail it. The gregtech successors also don't quite nail it.

I have to credit GT in inspiring the direction of my career. I wish there were more games like it.