[quote=@TheSovereignGrave] I know for a fact that replicators are a resounding 'no'. But as for the others, I think they're stuff at least someone else already has. What exactly are metamaterials though, I'm curious. Plus, I mean you have my nation: a single system full of megastructures who break down entire planets for raw materials. But I'm gonna add the usual disclaimer: GM has final say. [/quote]In such an industry I can't see how replicators are out of place. Not like energy is free and absolutely plentiful. We technically can already create matter out of energy, that's what colliders are kinda for (or at least can be used as). As for metamaterials, you can talk about many things. Metastable matter is for example a buzzword for various intermediate matter which is rich in energy and easy to break down into other matter for cheaper use in Replicators. (for the same reason they are also a viable battery) Durachrome is another popular matter I like to use with White Corp. It's basically a new stable and superdense metal which is tough but also damn heavy in comparison. Good for anything which requires strength and protection, especially with structural integrity fields boosting them. These are the two most obvious examples. The rest more or less goes in a similar direction. Speaking of which I might use spatial manipulation (duh, FTL travel already does it) and subspace storage tech for nice compact kit uses.