Just want to second how solidly built the game feels. There's definitely a learning curve which keeps on going for many hours (and I think that's a big part of the appeal) and there's some missing in-game information that I've found myself having to look up online - that much is true.

But the UX has incredible amounts of well-thought out polish. Different sized hitboxes for different components, often really favoring playability makes navigating bases really handy. Live map view with the ability to zoom into a location you're not currently near to get a real view of the factory at that point. Unrealistic long reach. Smart notifications on events happening in the base. Graphs diagramming pollution generation and electricity use by factory component type spanning the whole game period. Map layers showing which zones are protected by your defenses, or the extent of spread of pollution, or the routes and locations of your automated trains. And dozens of really useful shortcuts as mentioned.

The game would be perfectly playable without any of these and still be really fun but the love and attention put in by the devs is very clear. And the most amazing thing is seeing all of these things happening all at the same time with thousands of moving pieces updating at 60hz and the game still runs smooth as butter. As a developer I've been very impressed by how smoothly this game runs. And as a gamer I have seen much much simpler games put computers to the test to achieve much less.