Factorio: Space Age. The DLC adds new tech, resources, space platforms, planets (Vulcanus, Fulgora, Gleba, Aquilo), alien creatures, and 1+ hour of orchestrated music.
Just curious, has Frontier ever considered doing an airport game in the same vein as Planet Zoo or Planet Coaster? I’d think there would be a pretty large fan base for such a game, especially since there are so many poorly received attempts out there, but people are willing to play them even...