I have been reading #DeepCarbonObservatory recently for the first time - yes I know it's been out for ages. I'll probably never run it as I don't run fantasy #ttrpg games generally.
However I can absolutely see myself pulling bits and using them. I could make a whole #Starfinder scenario out of just one of the underground rooms. (If I ran SF any more which I don't.) Dark tech fantasy was precisely my jam in SF - I actually don't like mixing tech & fantasy in games but SF is designed for that.