Such a great concept but I found the lack of legit challenge ultimately made the game a bit too dull. I put all alien settings to hardest always expecting to get wiped, but they were still never able to scratch my defenses, then I was just afking the last hours until I produced enough shit to launch the rocket.
I guess in the end this is just one of those games for people who like building stuff for the sake of building stuff, like minecraft, not really my thing. I give it credit for being very original gameplay, but kinda more tedious than fun or challenging imo.
I think you can find mods to make it challening, and i believe there are even pvp maps which sounds awesome and strange. I also found the aliens a bit easy, so ill probably try modding it eventually.