So this is a thing that happened...
aaaand Guess what I got?!
So in game, in order to summon the thing, you need to find a signal from one of the reality interfaces Atlas controls and maintains the reality with. If you fiddle with it, it basically creates a crossover event where you can bring things from other "universes" (other games) into NMS.
Since my story was starting in the No Man's Sky universe anyways, this gives me a legitimate way of going to other universes from NMS, and even make them game universes on top of that without it being just another multiverse story.
Frostpunk is the first universe the character will go, but Mass Effect just rose to the top of the list as a result of this canonical (for NMS) crossover event.
The fact that my character actually has the Normandy will turn some heads too :P