I’m an avid Factorio player. It is rare to see such commitment to craftsmanship that the Factorio developers demonstrate. Every aspect of the game is continually refined and improved. The game is very performant even when there tens of thousands of entities moving around at any moment.
The multiplayer gameplay also reveals a lot of fundamental truths about collaborative engineering as the player must debate architecture, prioritize and balance between the short term and the long term, join individual efforts into a group product, discover Schelling points, and so on.